/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=DEEPEST --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/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:30:28,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:30:28,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:30:28,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:30:28,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:30:28,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:30:28,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:30:28,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:30:28,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:30:28,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:30:28,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:30:28,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:30:28,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:30:28,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:30:28,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:30:28,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:30:28,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:30:28,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:30:28,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:30:28,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:30:28,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:30:28,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:30:28,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:30:28,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:30:29,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:30:29,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:30:29,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:30:29,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:30:29,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:30:29,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:30:29,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:30:29,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:30:29,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:30:29,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:30:29,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:30:29,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:30:29,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:30:29,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:30:29,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:30:29,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:30:29,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:30:29,039 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 [2020-10-27 18:30:29,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:30:29,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:30:29,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:30:29,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:30:29,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:30:29,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:30:29,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:30:29,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:30:29,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:30:29,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:30:29,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:30:29,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:30:29,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:30:29,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:30:29,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:30:29,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:30:29,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:30:29,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:30:29,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:30:29,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:30:29,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:30:29,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:30:29,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:30:29,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:30:29,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:30:29,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:30:29,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:30:29,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:30:29,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:30:29,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:30:29,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:30:29,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:30:29,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:30:29,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:30:29,766 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:30:29,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-27 18:30:29,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950fefb71/ff915ce933bb4c34a1fd337380b1062c/FLAG1e0f29e3f [2020-10-27 18:30:30,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:30:30,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-27 18:30:30,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950fefb71/ff915ce933bb4c34a1fd337380b1062c/FLAG1e0f29e3f [2020-10-27 18:30:31,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/950fefb71/ff915ce933bb4c34a1fd337380b1062c [2020-10-27 18:30:31,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:30:31,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:30:31,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:30:31,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:30:31,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:30:31,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:31" (1/1) ... [2020-10-27 18:30:31,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:31, skipping insertion in model container [2020-10-27 18:30:31,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:31" (1/1) ... [2020-10-27 18:30:31,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:30:31,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:30:32,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:30:32,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:30:32,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:30:32,932 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:30:32,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32 WrapperNode [2020-10-27 18:30:32,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:30:32,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:30:32,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:30:32,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:30:32,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:32,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (1/1) ... [2020-10-27 18:30:33,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:30:33,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:30:33,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:30:33,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:30:33,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (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 [2020-10-27 18:30:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:30:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:30:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:30:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:30:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:30:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:30:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:30:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:30:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:30:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:30:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:30:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:30:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:30:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:30:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:30:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:30:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:30:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:30:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:30:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:30:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:30:36,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:30:36,486 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:30:36,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:36 BoogieIcfgContainer [2020-10-27 18:30:36,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:30:36,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:30:36,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:30:36,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:30:36,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:30:31" (1/3) ... [2020-10-27 18:30:36,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:36, skipping insertion in model container [2020-10-27 18:30:36,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:32" (2/3) ... [2020-10-27 18:30:36,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:36, skipping insertion in model container [2020-10-27 18:30:36,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:36" (3/3) ... [2020-10-27 18:30:36,499 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-27 18:30:36,512 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:30:36,518 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:30:36,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:30:36,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:30:36,564 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:30:36,565 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:30:36,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:30:36,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:30:36,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:30:36,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:30:36,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:30:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:30:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 18:30:36,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:36,603 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] [2020-10-27 18:30:36,603 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:36,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2117039617, now seen corresponding path program 1 times [2020-10-27 18:30:36,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:36,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39592355] [2020-10-27 18:30:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:37,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:37,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 18:30:37,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-27 18:30:37,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:30:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:30:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 18:30:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:30:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:37,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:30:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:30:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:30:37,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39592355] [2020-10-27 18:30:37,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:30:37,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:30:37,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85958348] [2020-10-27 18:30:37,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:30:37,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:30:37,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:30:37,680 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:30:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:46,560 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-27 18:30:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:30:46,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-27 18:30:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:46,601 INFO L225 Difference]: With dead ends: 1229 [2020-10-27 18:30:46,602 INFO L226 Difference]: Without dead ends: 709 [2020-10-27 18:30:46,616 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 [2020-10-27 18:30:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-27 18:30:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-27 18:30:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-27 18:30:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-27 18:30:46,768 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 36 [2020-10-27 18:30:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:46,769 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-27 18:30:46,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:30:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-27 18:30:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 18:30:46,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:46,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:46,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:30:46,779 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:46,783 INFO L82 PathProgramCache]: Analyzing trace with hash 950484538, now seen corresponding path program 1 times [2020-10-27 18:30:46,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:46,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969645306] [2020-10-27 18:30:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:48,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:48,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:30:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:30:48,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-27 18:30:48,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:30:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 18:30:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:30:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:30:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:30:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:48,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:30:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:48,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:30:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:30:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 18:30:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:30:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969645306] [2020-10-27 18:30:48,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:30:48,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:30:48,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052478470] [2020-10-27 18:30:48,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:30:48,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:48,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:30:48,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:30:48,733 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 5 states. [2020-10-27 18:30:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:56,249 INFO L93 Difference]: Finished difference Result 1697 states and 2715 transitions. [2020-10-27 18:30:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:30:56,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 18:30:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:56,256 INFO L225 Difference]: With dead ends: 1697 [2020-10-27 18:30:56,256 INFO L226 Difference]: Without dead ends: 1008 [2020-10-27 18:30:56,259 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 [2020-10-27 18:30:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-27 18:30:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2020-10-27 18:30:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-27 18:30:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1363 transitions. [2020-10-27 18:30:56,311 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1363 transitions. Word has length 106 [2020-10-27 18:30:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:56,314 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1363 transitions. [2020-10-27 18:30:56,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:30:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1363 transitions. [2020-10-27 18:30:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 18:30:56,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:56,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:56,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:30:56,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1077347085, now seen corresponding path program 1 times [2020-10-27 18:30:56,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:56,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347319110] [2020-10-27 18:30:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:57,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:30:57,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:30:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-27 18:30:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:30:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 18:30:57,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:30:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:57,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:57,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:30:57,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:30:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:58,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:58,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:30:58,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:30:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:30:58,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:30:58,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347319110] [2020-10-27 18:30:58,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:30:58,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:30:58,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616560664] [2020-10-27 18:30:58,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:30:58,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:30:58,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:30:58,111 INFO L87 Difference]: Start difference. First operand 1006 states and 1363 transitions. Second operand 5 states. [2020-10-27 18:31:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:05,417 INFO L93 Difference]: Finished difference Result 2019 states and 2944 transitions. [2020-10-27 18:31:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:05,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 18:31:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:05,430 INFO L225 Difference]: With dead ends: 2019 [2020-10-27 18:31:05,431 INFO L226 Difference]: Without dead ends: 1328 [2020-10-27 18:31:05,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:31:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-10-27 18:31:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1328. [2020-10-27 18:31:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-27 18:31:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1745 transitions. [2020-10-27 18:31:05,544 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1745 transitions. Word has length 119 [2020-10-27 18:31:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:05,545 INFO L481 AbstractCegarLoop]: Abstraction has 1328 states and 1745 transitions. [2020-10-27 18:31:05,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1745 transitions. [2020-10-27 18:31:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 18:31:05,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:05,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:31:05,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:31:05,551 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1440991209, now seen corresponding path program 1 times [2020-10-27 18:31:05,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:05,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395191251] [2020-10-27 18:31:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:06,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:06,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 18:31:06,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:31:06,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-27 18:31:06,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 18:31:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:31:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:31:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:31:07,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:31:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 18:31:07,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:31:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:31:07,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395191251] [2020-10-27 18:31:07,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:07,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:07,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341925553] [2020-10-27 18:31:07,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:07,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:07,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:07,366 INFO L87 Difference]: Start difference. First operand 1328 states and 1745 transitions. Second operand 5 states. [2020-10-27 18:31:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:17,482 INFO L93 Difference]: Finished difference Result 3272 states and 4444 transitions. [2020-10-27 18:31:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:17,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 18:31:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:17,505 INFO L225 Difference]: With dead ends: 3272 [2020-10-27 18:31:17,510 INFO L226 Difference]: Without dead ends: 2259 [2020-10-27 18:31:17,514 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 [2020-10-27 18:31:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-10-27 18:31:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2257. [2020-10-27 18:31:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-27 18:31:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2777 transitions. [2020-10-27 18:31:17,594 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2777 transitions. Word has length 152 [2020-10-27 18:31:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:17,595 INFO L481 AbstractCegarLoop]: Abstraction has 2257 states and 2777 transitions. [2020-10-27 18:31:17,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2777 transitions. [2020-10-27 18:31:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 18:31:17,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:17,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:31:17,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:31:17,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:17,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1061140464, now seen corresponding path program 1 times [2020-10-27 18:31:17,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:17,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461486507] [2020-10-27 18:31:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:18,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:19,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:19,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 18:31:19,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:31:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-10-27 18:31:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 18:31:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:31:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:20,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:20,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:31:20,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 18:31:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:31:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:31:20,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461486507] [2020-10-27 18:31:20,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:20,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:20,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543953192] [2020-10-27 18:31:20,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:20,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:20,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:20,244 INFO L87 Difference]: Start difference. First operand 2257 states and 2777 transitions. Second operand 5 states. [2020-10-27 18:31:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:29,502 INFO L93 Difference]: Finished difference Result 5137 states and 6540 transitions. [2020-10-27 18:31:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:29,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 18:31:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:29,526 INFO L225 Difference]: With dead ends: 5137 [2020-10-27 18:31:29,526 INFO L226 Difference]: Without dead ends: 3195 [2020-10-27 18:31:29,532 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 [2020-10-27 18:31:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2020-10-27 18:31:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3194. [2020-10-27 18:31:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-10-27 18:31:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 3997 transitions. [2020-10-27 18:31:29,640 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 3997 transitions. Word has length 159 [2020-10-27 18:31:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:29,641 INFO L481 AbstractCegarLoop]: Abstraction has 3194 states and 3997 transitions. [2020-10-27 18:31:29,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 3997 transitions. [2020-10-27 18:31:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 18:31:29,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:29,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:31:29,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:31:29,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1139517755, now seen corresponding path program 1 times [2020-10-27 18:31:29,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:29,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546752079] [2020-10-27 18:31:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 18:31:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:31:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-27 18:31:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-27 18:31:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:31:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:31,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:31,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:31:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:31,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:31:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 18:31:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:31:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:31:31,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546752079] [2020-10-27 18:31:31,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:31,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:31,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030527822] [2020-10-27 18:31:31,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:31,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:31,462 INFO L87 Difference]: Start difference. First operand 3194 states and 3997 transitions. Second operand 5 states. [2020-10-27 18:31:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:39,461 INFO L93 Difference]: Finished difference Result 7005 states and 9064 transitions. [2020-10-27 18:31:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:39,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 18:31:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:39,487 INFO L225 Difference]: With dead ends: 7005 [2020-10-27 18:31:39,487 INFO L226 Difference]: Without dead ends: 4126 [2020-10-27 18:31:39,496 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 [2020-10-27 18:31:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2020-10-27 18:31:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4124. [2020-10-27 18:31:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4124 states. [2020-10-27 18:31:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 5060 transitions. [2020-10-27 18:31:39,620 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 5060 transitions. Word has length 165 [2020-10-27 18:31:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:39,620 INFO L481 AbstractCegarLoop]: Abstraction has 4124 states and 5060 transitions. [2020-10-27 18:31:39,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 5060 transitions. [2020-10-27 18:31:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 18:31:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:39,625 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:31:39,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:31:39,626 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1947840963, now seen corresponding path program 1 times [2020-10-27 18:31:39,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747315878] [2020-10-27 18:31:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:44,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 18:31:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:31:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:31:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:31:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:31:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:31:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:31:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:31:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:31:44,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:31:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:31:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:44,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:44,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:31:44,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:31:44,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:31:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:31:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:31:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:44,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:31:45,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 18:31:45,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:31:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:31:45,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:31:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:31:45,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:31:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:31:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:31:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:31:45,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747315878] [2020-10-27 18:31:45,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:31:45,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:31:45,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084099029] [2020-10-27 18:31:45,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:31:45,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:31:45,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:31:45,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:31:45,132 INFO L87 Difference]: Start difference. First operand 4124 states and 5060 transitions. Second operand 5 states. [2020-10-27 18:31:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:31:55,760 INFO L93 Difference]: Finished difference Result 10118 states and 12699 transitions. [2020-10-27 18:31:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:31:55,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-27 18:31:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:31:55,799 INFO L225 Difference]: With dead ends: 10118 [2020-10-27 18:31:55,800 INFO L226 Difference]: Without dead ends: 6309 [2020-10-27 18:31:55,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:31:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2020-10-27 18:31:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 6300. [2020-10-27 18:31:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-10-27 18:31:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 7647 transitions. [2020-10-27 18:31:56,018 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 7647 transitions. Word has length 204 [2020-10-27 18:31:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:31:56,019 INFO L481 AbstractCegarLoop]: Abstraction has 6300 states and 7647 transitions. [2020-10-27 18:31:56,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:31:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 7647 transitions. [2020-10-27 18:31:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 18:31:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:31:56,024 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:31:56,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:31:56,024 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:31:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:31:56,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1320982365, now seen corresponding path program 1 times [2020-10-27 18:31:56,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:31:56,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706092381] [2020-10-27 18:31:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:31:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:31:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:31:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 18:32:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:32:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 18:32:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-27 18:32:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:32:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:32:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:32:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:01,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:01,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:01,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:32:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:01,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 18:32:01,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 18:32:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:32:01,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706092381] [2020-10-27 18:32:01,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:01,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:32:01,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902328343] [2020-10-27 18:32:01,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:32:01,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:32:01,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:32:01,524 INFO L87 Difference]: Start difference. First operand 6300 states and 7647 transitions. Second operand 5 states. [2020-10-27 18:32:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:10,601 INFO L93 Difference]: Finished difference Result 14138 states and 17611 transitions. [2020-10-27 18:32:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:32:10,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-27 18:32:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:10,663 INFO L225 Difference]: With dead ends: 14138 [2020-10-27 18:32:10,663 INFO L226 Difference]: Without dead ends: 8151 [2020-10-27 18:32:10,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2020-10-27 18:32:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 8151. [2020-10-27 18:32:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8151 states. [2020-10-27 18:32:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8151 states to 8151 states and 9676 transitions. [2020-10-27 18:32:10,922 INFO L78 Accepts]: Start accepts. Automaton has 8151 states and 9676 transitions. Word has length 209 [2020-10-27 18:32:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:10,922 INFO L481 AbstractCegarLoop]: Abstraction has 8151 states and 9676 transitions. [2020-10-27 18:32:10,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:32:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8151 states and 9676 transitions. [2020-10-27 18:32:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 18:32:10,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:10,928 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:32:10,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:32:10,929 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash -524657573, now seen corresponding path program 1 times [2020-10-27 18:32:10,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:10,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794940388] [2020-10-27 18:32:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:16,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 18:32:16,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:32:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:32:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-27 18:32:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:32:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:16,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:16,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:32:16,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:16,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:16,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:16,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:32:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:32:16,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:32:16,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:32:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:16,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:16,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:32:16,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:32:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 18:32:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:32:16,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794940388] [2020-10-27 18:32:16,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:16,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:32:16,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795533544] [2020-10-27 18:32:16,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:32:16,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:32:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:32:16,590 INFO L87 Difference]: Start difference. First operand 8151 states and 9676 transitions. Second operand 5 states. [2020-10-27 18:32:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:25,542 INFO L93 Difference]: Finished difference Result 18468 states and 22520 transitions. [2020-10-27 18:32:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:32:25,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-27 18:32:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:25,598 INFO L225 Difference]: With dead ends: 18468 [2020-10-27 18:32:25,599 INFO L226 Difference]: Without dead ends: 10630 [2020-10-27 18:32:25,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2020-10-27 18:32:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 10630. [2020-10-27 18:32:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10630 states. [2020-10-27 18:32:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10630 states to 10630 states and 12913 transitions. [2020-10-27 18:32:25,928 INFO L78 Accepts]: Start accepts. Automaton has 10630 states and 12913 transitions. Word has length 254 [2020-10-27 18:32:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:25,929 INFO L481 AbstractCegarLoop]: Abstraction has 10630 states and 12913 transitions. [2020-10-27 18:32:25,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:32:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10630 states and 12913 transitions. [2020-10-27 18:32:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-27 18:32:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:25,939 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:32:25,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:32:25,939 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash 26934268, now seen corresponding path program 1 times [2020-10-27 18:32:25,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:25,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318351186] [2020-10-27 18:32:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:29,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-27 18:32:29,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 18:32:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:29,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:32:29,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:29,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:29,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:32:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:29,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:32:29,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:32:29,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:32:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:29,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:29,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 18:32:29,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 18:32:29,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 18:32:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:32:30,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318351186] [2020-10-27 18:32:30,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:30,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:32:30,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771655509] [2020-10-27 18:32:30,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:32:30,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:30,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:32:30,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:32:30,119 INFO L87 Difference]: Start difference. First operand 10630 states and 12913 transitions. Second operand 5 states. [2020-10-27 18:32:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:32:43,663 INFO L93 Difference]: Finished difference Result 25298 states and 31624 transitions. [2020-10-27 18:32:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:32:43,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-27 18:32:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:32:43,735 INFO L225 Difference]: With dead ends: 25298 [2020-10-27 18:32:43,735 INFO L226 Difference]: Without dead ends: 14981 [2020-10-27 18:32:43,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2020-10-27 18:32:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 12832. [2020-10-27 18:32:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12832 states. [2020-10-27 18:32:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12832 states to 12832 states and 15744 transitions. [2020-10-27 18:32:44,124 INFO L78 Accepts]: Start accepts. Automaton has 12832 states and 15744 transitions. Word has length 281 [2020-10-27 18:32:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:32:44,125 INFO L481 AbstractCegarLoop]: Abstraction has 12832 states and 15744 transitions. [2020-10-27 18:32:44,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:32:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 12832 states and 15744 transitions. [2020-10-27 18:32:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-27 18:32:44,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:32:44,138 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:32:44,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:32:44,139 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:32:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:32:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash 976040242, now seen corresponding path program 1 times [2020-10-27 18:32:44,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:32:44,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757299950] [2020-10-27 18:32:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:32:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:49,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:49,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-27 18:32:49,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:32:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 18:32:49,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 18:32:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:32:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:32:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:32:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:32:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:32:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:49,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:49,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:32:49,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:32:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:32:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:32:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:32:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:32:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-27 18:32:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:32:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:49,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:32:50,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:32:50,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 18:32:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:32:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 18:32:50,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:32:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:32:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:32:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 18:32:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:32:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-27 18:32:50,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757299950] [2020-10-27 18:32:50,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:32:50,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:32:50,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539607964] [2020-10-27 18:32:50,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:32:50,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:32:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:32:50,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:32:50,640 INFO L87 Difference]: Start difference. First operand 12832 states and 15744 transitions. Second operand 6 states. [2020-10-27 18:32:50,902 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 18:32:52,287 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:33:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:01,571 INFO L93 Difference]: Finished difference Result 25390 states and 31223 transitions. [2020-10-27 18:33:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:33:01,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 348 [2020-10-27 18:33:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:01,656 INFO L225 Difference]: With dead ends: 25390 [2020-10-27 18:33:01,656 INFO L226 Difference]: Without dead ends: 12850 [2020-10-27 18:33:01,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:33:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12850 states. [2020-10-27 18:33:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12850 to 12832. [2020-10-27 18:33:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12832 states. [2020-10-27 18:33:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12832 states to 12832 states and 15738 transitions. [2020-10-27 18:33:01,993 INFO L78 Accepts]: Start accepts. Automaton has 12832 states and 15738 transitions. Word has length 348 [2020-10-27 18:33:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:01,994 INFO L481 AbstractCegarLoop]: Abstraction has 12832 states and 15738 transitions. [2020-10-27 18:33:01,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:33:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12832 states and 15738 transitions. [2020-10-27 18:33:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-27 18:33:02,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:02,012 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:02,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:33:02,012 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1485003165, now seen corresponding path program 1 times [2020-10-27 18:33:02,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:02,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012410999] [2020-10-27 18:33:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:07,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:07,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 18:33:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:07,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:07,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:33:07,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:33:07,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:33:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:33:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:07,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:07,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:33:07,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:33:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-27 18:33:07,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:33:07,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 18:33:07,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:33:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 18:33:08,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:33:08,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-27 18:33:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 180 proven. 120 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-27 18:33:08,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012410999] [2020-10-27 18:33:08,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:08,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:33:08,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594885473] [2020-10-27 18:33:08,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:33:08,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:33:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:33:08,161 INFO L87 Difference]: Start difference. First operand 12832 states and 15738 transitions. Second operand 7 states. [2020-10-27 18:33:09,153 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 18:33:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:20,597 INFO L93 Difference]: Finished difference Result 25787 states and 33421 transitions. [2020-10-27 18:33:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:33:20,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-27 18:33:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:20,707 INFO L225 Difference]: With dead ends: 25787 [2020-10-27 18:33:20,708 INFO L226 Difference]: Without dead ends: 13218 [2020-10-27 18:33:20,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:33:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13218 states. [2020-10-27 18:33:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13218 to 12878. [2020-10-27 18:33:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12878 states. [2020-10-27 18:33:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12878 states to 12878 states and 15780 transitions. [2020-10-27 18:33:21,302 INFO L78 Accepts]: Start accepts. Automaton has 12878 states and 15780 transitions. Word has length 385 [2020-10-27 18:33:21,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:21,302 INFO L481 AbstractCegarLoop]: Abstraction has 12878 states and 15780 transitions. [2020-10-27 18:33:21,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:33:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 12878 states and 15780 transitions. [2020-10-27 18:33:21,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-27 18:33:21,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:21,322 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:21,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:33:21,323 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:21,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2103967260, now seen corresponding path program 1 times [2020-10-27 18:33:21,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:21,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106658799] [2020-10-27 18:33:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:21,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-27 18:33:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:33:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 18:33:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-27 18:33:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 18:33:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:33:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:26,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:26,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:26,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:33:26,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:33:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:33:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:26,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:26,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:33:26,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:33:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-27 18:33:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:27,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:27,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 18:33:27,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:27,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 18:33:27,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:27,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:27,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:33:27,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 18:33:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-27 18:33:27,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106658799] [2020-10-27 18:33:27,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:27,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:33:27,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333147795] [2020-10-27 18:33:27,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:33:27,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:33:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:33:27,321 INFO L87 Difference]: Start difference. First operand 12878 states and 15780 transitions. Second operand 8 states. [2020-10-27 18:33:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:33:37,861 INFO L93 Difference]: Finished difference Result 25256 states and 31355 transitions. [2020-10-27 18:33:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:33:37,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 447 [2020-10-27 18:33:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:33:37,925 INFO L225 Difference]: With dead ends: 25256 [2020-10-27 18:33:37,925 INFO L226 Difference]: Without dead ends: 12691 [2020-10-27 18:33:37,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:33:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12691 states. [2020-10-27 18:33:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12691 to 12362. [2020-10-27 18:33:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12362 states. [2020-10-27 18:33:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12362 states to 12362 states and 14762 transitions. [2020-10-27 18:33:38,281 INFO L78 Accepts]: Start accepts. Automaton has 12362 states and 14762 transitions. Word has length 447 [2020-10-27 18:33:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:33:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 12362 states and 14762 transitions. [2020-10-27 18:33:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:33:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12362 states and 14762 transitions. [2020-10-27 18:33:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-27 18:33:38,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:33:38,431 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:33:38,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:33:38,432 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:33:38,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:33:38,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1300794826, now seen corresponding path program 1 times [2020-10-27 18:33:38,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:33:38,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059166445] [2020-10-27 18:33:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:33:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:43,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-27 18:33:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 18:33:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:33:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:33:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:33:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:43,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:43,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:33:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 18:33:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-27 18:33:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:44,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 18:33:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-27 18:33:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:33:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:33:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:33:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 18:33:44,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:33:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 18:33:44,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:33:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:33:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-27 18:33:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:33:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:33:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 217 proven. 130 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-27 18:33:44,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059166445] [2020-10-27 18:33:44,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:33:44,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:33:44,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806966155] [2020-10-27 18:33:44,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:33:44,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:33:44,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:33:44,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:33:44,548 INFO L87 Difference]: Start difference. First operand 12362 states and 14762 transitions. Second operand 7 states. [2020-10-27 18:33:46,088 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 18:34:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:34:01,476 INFO L93 Difference]: Finished difference Result 29122 states and 37464 transitions. [2020-10-27 18:34:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:34:01,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-27 18:34:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:34:01,586 INFO L225 Difference]: With dead ends: 29122 [2020-10-27 18:34:01,586 INFO L226 Difference]: Without dead ends: 17073 [2020-10-27 18:34:01,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:34:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17073 states. [2020-10-27 18:34:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17073 to 16833. [2020-10-27 18:34:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16833 states. [2020-10-27 18:34:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16833 states to 16833 states and 20336 transitions. [2020-10-27 18:34:02,251 INFO L78 Accepts]: Start accepts. Automaton has 16833 states and 20336 transitions. Word has length 463 [2020-10-27 18:34:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:34:02,253 INFO L481 AbstractCegarLoop]: Abstraction has 16833 states and 20336 transitions. [2020-10-27 18:34:02,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:34:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16833 states and 20336 transitions. [2020-10-27 18:34:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-27 18:34:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:34:02,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:34:02,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:34:02,277 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:34:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:34:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -50218341, now seen corresponding path program 1 times [2020-10-27 18:34:02,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:34:02,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052163940] [2020-10-27 18:34:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:34:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:34:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:34:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking...