/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/Problem03_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:43:08,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:43:08,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:43:08,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:43:08,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:43:08,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:43:08,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:43:08,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:43:08,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:43:08,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:43:08,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:43:08,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:43:08,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:43:08,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:43:08,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:43:08,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:43:08,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:43:08,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:43:08,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:43:08,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:43:08,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:43:08,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:43:08,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:43:08,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:43:08,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:43:08,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:43:08,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:43:08,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:43:08,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:43:08,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:43:08,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:43:08,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:43:08,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:43:08,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:43:08,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:43:08,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:43:08,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:43:08,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:43:08,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:43:08,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:43:08,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:43:08,480 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 15:43:08,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:43:08,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:43:08,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:43:08,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:43:08,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:43:08,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:43:08,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:43:08,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:43:08,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:43:08,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:43:08,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:43:08,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:43:08,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:43:08,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:43:08,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:43:08,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:43:08,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:43:08,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:43:08,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:43:08,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:43:08,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:43:08,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:43:08,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:43:08,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:43:08,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:43:08,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:43:08,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:43:08,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:43:08,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:43:08,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:43:08,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:43:09,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:43:09,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:43:09,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:43:09,023 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:43:09,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21.c [2020-10-27 15:43:09,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeab3e530/ac943ed9186a49d29efaef7bd59ef8e4/FLAG5576709e3 [2020-10-27 15:43:10,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:43:10,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label21.c [2020-10-27 15:43:10,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeab3e530/ac943ed9186a49d29efaef7bd59ef8e4/FLAG5576709e3 [2020-10-27 15:43:10,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeab3e530/ac943ed9186a49d29efaef7bd59ef8e4 [2020-10-27 15:43:10,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:43:10,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:43:10,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:10,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:43:10,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:43:10,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:10" (1/1) ... [2020-10-27 15:43:10,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a24885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:10, skipping insertion in model container [2020-10-27 15:43:10,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:10" (1/1) ... [2020-10-27 15:43:10,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:43:10,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:43:11,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:11,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:43:11,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:11,463 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:43:11,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11 WrapperNode [2020-10-27 15:43:11,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:11,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:43:11,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:43:11,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:43:11,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (1/1) ... [2020-10-27 15:43:11,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:43:11,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:43:11,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:43:11,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:43:11,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (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 15:43:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:43:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:43:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:43:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:43:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:43:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:43:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:43:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:43:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:43:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:43:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:43:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:43:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:43:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:43:13,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:43:13,804 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:43:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:13 BoogieIcfgContainer [2020-10-27 15:43:13,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:43:13,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:43:13,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:43:13,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:43:13,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:43:10" (1/3) ... [2020-10-27 15:43:13,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7464805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:13, skipping insertion in model container [2020-10-27 15:43:13,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:11" (2/3) ... [2020-10-27 15:43:13,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7464805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:13, skipping insertion in model container [2020-10-27 15:43:13,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:13" (3/3) ... [2020-10-27 15:43:13,817 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label21.c [2020-10-27 15:43:13,830 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:43:13,836 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:43:13,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:43:13,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:43:13,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:43:13,883 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:43:13,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:43:13,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:43:13,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:43:13,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:43:13,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:43:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:43:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 15:43:13,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:13,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:13,934 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash -955215892, now seen corresponding path program 1 times [2020-10-27 15:43:13,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:13,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186279556] [2020-10-27 15:43:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:19,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:19,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 15:43:19,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 15:43:19,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:43:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:43:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:43:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:43:20,358 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 15:43:21,187 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:21,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:21,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 15:43:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:43:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:21,823 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 15:43:21,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186279556] [2020-10-27 15:43:21,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:43:21,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 15:43:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558057115] [2020-10-27 15:43:21,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:43:21,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:43:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:43:21,850 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-27 15:43:22,453 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 15:43:23,635 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-27 15:43:24,679 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-27 15:43:25,778 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-10-27 15:43:27,606 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-27 15:43:29,658 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 225 DAG size of output: 202 [2020-10-27 15:43:31,917 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 228 DAG size of output: 201 [2020-10-27 15:43:35,754 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 229 DAG size of output: 200 [2020-10-27 15:43:37,118 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 231 DAG size of output: 198 [2020-10-27 15:43:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:40,361 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-27 15:43:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:43:40,365 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 209 [2020-10-27 15:43:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:40,382 INFO L225 Difference]: With dead ends: 742 [2020-10-27 15:43:40,382 INFO L226 Difference]: Without dead ends: 365 [2020-10-27 15:43:40,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:43:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-27 15:43:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-27 15:43:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-27 15:43:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-27 15:43:40,474 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 209 [2020-10-27 15:43:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:40,475 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-27 15:43:40,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:43:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-27 15:43:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 15:43:40,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:40,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:40,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:43:40,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:40,484 INFO L82 PathProgramCache]: Analyzing trace with hash 775876767, now seen corresponding path program 1 times [2020-10-27 15:43:40,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:40,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877248733] [2020-10-27 15:43:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:40,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 15:43:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:43:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4805 [2020-10-27 15:43:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:43:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 15:43:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:45,866 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:45,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:43:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:46,025 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:43:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:46,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:46,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:46,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:43:46,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:43:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:46,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877248733] [2020-10-27 15:43:46,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:46,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:46,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270103639] [2020-10-27 15:43:46,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:46,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:46,186 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 5 states. [2020-10-27 15:43:46,441 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:49,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:49,470 INFO L93 Difference]: Finished difference Result 820 states and 1278 transitions. [2020-10-27 15:43:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:49,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-27 15:43:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:49,478 INFO L225 Difference]: With dead ends: 820 [2020-10-27 15:43:49,478 INFO L226 Difference]: Without dead ends: 576 [2020-10-27 15:43:49,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-27 15:43:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2020-10-27 15:43:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-27 15:43:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 775 transitions. [2020-10-27 15:43:49,537 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 775 transitions. Word has length 220 [2020-10-27 15:43:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:49,538 INFO L481 AbstractCegarLoop]: Abstraction has 576 states and 775 transitions. [2020-10-27 15:43:49,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 775 transitions. [2020-10-27 15:43:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 15:43:49,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:49,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:49,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:43:49,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:49,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1897651827, now seen corresponding path program 1 times [2020-10-27 15:43:49,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:49,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488148249] [2020-10-27 15:43:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 15:43:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:43:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2716 [2020-10-27 15:43:52,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:43:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 15:43:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:52,759 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 19 [2020-10-27 15:43:52,982 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:53,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:43:53,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:53,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:43:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:43:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:53,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488148249] [2020-10-27 15:43:53,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:53,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:53,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171192543] [2020-10-27 15:43:53,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:53,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:53,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:53,461 INFO L87 Difference]: Start difference. First operand 576 states and 775 transitions. Second operand 5 states. [2020-10-27 15:43:53,958 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 15:43:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:56,923 INFO L93 Difference]: Finished difference Result 1209 states and 1743 transitions. [2020-10-27 15:43:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:56,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-27 15:43:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:56,931 INFO L225 Difference]: With dead ends: 1209 [2020-10-27 15:43:56,933 INFO L226 Difference]: Without dead ends: 564 [2020-10-27 15:43:56,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-27 15:43:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2020-10-27 15:43:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-10-27 15:43:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 726 transitions. [2020-10-27 15:43:56,979 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 726 transitions. Word has length 230 [2020-10-27 15:43:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:56,980 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 726 transitions. [2020-10-27 15:43:56,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 726 transitions. [2020-10-27 15:43:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-27 15:43:56,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:56,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:56,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:43:56,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1744958588, now seen corresponding path program 1 times [2020-10-27 15:43:56,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:56,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621305914] [2020-10-27 15:43:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:59,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 15:43:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2456 [2020-10-27 15:43:59,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:43:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 15:43:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:59,907 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:59,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:59,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:43:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:44:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:00,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:44:00,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:44:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:44:00,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621305914] [2020-10-27 15:44:00,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:00,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:00,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705472996] [2020-10-27 15:44:00,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:00,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:00,212 INFO L87 Difference]: Start difference. First operand 564 states and 726 transitions. Second operand 5 states. [2020-10-27 15:44:00,646 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:44:03,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:03,548 INFO L93 Difference]: Finished difference Result 1455 states and 1938 transitions. [2020-10-27 15:44:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:03,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-27 15:44:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:03,556 INFO L225 Difference]: With dead ends: 1455 [2020-10-27 15:44:03,556 INFO L226 Difference]: Without dead ends: 1000 [2020-10-27 15:44:03,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-10-27 15:44:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 990. [2020-10-27 15:44:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-27 15:44:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1258 transitions. [2020-10-27 15:44:03,599 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1258 transitions. Word has length 241 [2020-10-27 15:44:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:03,600 INFO L481 AbstractCegarLoop]: Abstraction has 990 states and 1258 transitions. [2020-10-27 15:44:03,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1258 transitions. [2020-10-27 15:44:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 15:44:03,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:03,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:03,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:44:03,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1289390063, now seen corresponding path program 1 times [2020-10-27 15:44:03,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:03,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553398680] [2020-10-27 15:44:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:06,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:06,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-27 15:44:06,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3161 [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 15:44:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:07,695 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-27 15:44:07,917 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:07,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:07,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:07,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 15:44:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:08,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:08,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:44:08,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 15:44:08,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:44:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:44:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553398680] [2020-10-27 15:44:08,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:08,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:44:08,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457004107] [2020-10-27 15:44:08,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:44:08,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:44:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:08,552 INFO L87 Difference]: Start difference. First operand 990 states and 1258 transitions. Second operand 6 states. [2020-10-27 15:44:09,289 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 15:44:09,947 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 15:44:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:13,587 INFO L93 Difference]: Finished difference Result 2426 states and 3287 transitions. [2020-10-27 15:44:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:44:13,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2020-10-27 15:44:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:13,600 INFO L225 Difference]: With dead ends: 2426 [2020-10-27 15:44:13,600 INFO L226 Difference]: Without dead ends: 1379 [2020-10-27 15:44:13,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:44:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-10-27 15:44:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1295. [2020-10-27 15:44:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-10-27 15:44:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1584 transitions. [2020-10-27 15:44:13,649 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1584 transitions. Word has length 244 [2020-10-27 15:44:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:13,650 INFO L481 AbstractCegarLoop]: Abstraction has 1295 states and 1584 transitions. [2020-10-27 15:44:13,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:44:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1584 transitions. [2020-10-27 15:44:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-27 15:44:13,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:13,656 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:13,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:44:13,657 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:13,657 INFO L82 PathProgramCache]: Analyzing trace with hash 837431353, now seen corresponding path program 1 times [2020-10-27 15:44:13,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:13,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286803986] [2020-10-27 15:44:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 15:44:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 15:44:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:19,138 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:19,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:19,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:19,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:44:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:19,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:44:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:44:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:44:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:44:19,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286803986] [2020-10-27 15:44:19,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:19,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:19,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976084761] [2020-10-27 15:44:19,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:19,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:19,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:19,429 INFO L87 Difference]: Start difference. First operand 1295 states and 1584 transitions. Second operand 5 states. [2020-10-27 15:44:19,847 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:22,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:22,724 INFO L93 Difference]: Finished difference Result 2903 states and 3695 transitions. [2020-10-27 15:44:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:22,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-27 15:44:22,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:22,738 INFO L225 Difference]: With dead ends: 2903 [2020-10-27 15:44:22,739 INFO L226 Difference]: Without dead ends: 1717 [2020-10-27 15:44:22,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:22,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-10-27 15:44:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1715. [2020-10-27 15:44:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-10-27 15:44:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2175 transitions. [2020-10-27 15:44:22,806 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2175 transitions. Word has length 251 [2020-10-27 15:44:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:22,807 INFO L481 AbstractCegarLoop]: Abstraction has 1715 states and 2175 transitions. [2020-10-27 15:44:22,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2175 transitions. [2020-10-27 15:44:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-27 15:44:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:22,817 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:22,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:44:22,818 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2054655030, now seen corresponding path program 1 times [2020-10-27 15:44:22,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:22,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314281082] [2020-10-27 15:44:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4810 [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 15:44:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 15:44:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:28,062 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:28,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:28,218 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:44:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:28,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:28,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:44:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:44:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:28,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314281082] [2020-10-27 15:44:28,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:28,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:44:28,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020491659] [2020-10-27 15:44:28,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:44:28,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:28,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:44:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:28,496 INFO L87 Difference]: Start difference. First operand 1715 states and 2175 transitions. Second operand 6 states. [2020-10-27 15:44:28,755 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:29,715 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:32,902 INFO L93 Difference]: Finished difference Result 5447 states and 7248 transitions. [2020-10-27 15:44:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:44:32,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 278 [2020-10-27 15:44:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:32,928 INFO L225 Difference]: With dead ends: 5447 [2020-10-27 15:44:32,928 INFO L226 Difference]: Without dead ends: 3841 [2020-10-27 15:44:32,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:44:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2020-10-27 15:44:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3813. [2020-10-27 15:44:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3813 states. [2020-10-27 15:44:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5074 transitions. [2020-10-27 15:44:33,056 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5074 transitions. Word has length 278 [2020-10-27 15:44:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:33,057 INFO L481 AbstractCegarLoop]: Abstraction has 3813 states and 5074 transitions. [2020-10-27 15:44:33,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:44:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5074 transitions. [2020-10-27 15:44:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 15:44:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:33,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:33,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:44:33,073 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1915424862, now seen corresponding path program 1 times [2020-10-27 15:44:33,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:33,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963202111] [2020-10-27 15:44:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:38,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 15:44:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 15:44:38,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 15:44:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-27 15:44:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:38,683 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:38,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:38,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:44:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:44:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:38,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:44:38,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 15:44:38,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 15:44:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 15:44:39,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963202111] [2020-10-27 15:44:39,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:39,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:39,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581096297] [2020-10-27 15:44:39,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:39,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:39,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:39,303 INFO L87 Difference]: Start difference. First operand 3813 states and 5074 transitions. Second operand 5 states. [2020-10-27 15:44:40,371 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 15:44:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:42,663 INFO L93 Difference]: Finished difference Result 7667 states and 10323 transitions. [2020-10-27 15:44:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:42,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-27 15:44:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:42,687 INFO L225 Difference]: With dead ends: 7667 [2020-10-27 15:44:42,687 INFO L226 Difference]: Without dead ends: 3856 [2020-10-27 15:44:42,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2020-10-27 15:44:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3856. [2020-10-27 15:44:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3856 states. [2020-10-27 15:44:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5131 transitions. [2020-10-27 15:44:42,801 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5131 transitions. Word has length 288 [2020-10-27 15:44:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:42,802 INFO L481 AbstractCegarLoop]: Abstraction has 3856 states and 5131 transitions. [2020-10-27 15:44:42,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5131 transitions. [2020-10-27 15:44:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 15:44:42,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:42,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:42,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:44:42,817 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash 863117241, now seen corresponding path program 1 times [2020-10-27 15:44:42,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:42,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663938268] [2020-10-27 15:44:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:47,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-27 15:44:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 15:44:47,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 15:44:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 15:44:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:48,258 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:44:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 15:44:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 15:44:48,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663938268] [2020-10-27 15:44:48,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:48,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:44:48,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257863312] [2020-10-27 15:44:48,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:44:48,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:48,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:44:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:48,711 INFO L87 Difference]: Start difference. First operand 3856 states and 5131 transitions. Second operand 6 states. [2020-10-27 15:44:49,282 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:51,280 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:44:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:52,899 INFO L93 Difference]: Finished difference Result 10745 states and 14758 transitions. [2020-10-27 15:44:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 15:44:52,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 298 [2020-10-27 15:44:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:52,936 INFO L225 Difference]: With dead ends: 10745 [2020-10-27 15:44:52,936 INFO L226 Difference]: Without dead ends: 6998 [2020-10-27 15:44:52,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:44:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2020-10-27 15:44:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6997. [2020-10-27 15:44:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6997 states. [2020-10-27 15:44:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6997 states to 6997 states and 9202 transitions. [2020-10-27 15:44:53,149 INFO L78 Accepts]: Start accepts. Automaton has 6997 states and 9202 transitions. Word has length 298 [2020-10-27 15:44:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:53,150 INFO L481 AbstractCegarLoop]: Abstraction has 6997 states and 9202 transitions. [2020-10-27 15:44:53,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:44:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6997 states and 9202 transitions. [2020-10-27 15:44:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 15:44:53,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:53,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:53,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:44:53,174 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -791564049, now seen corresponding path program 1 times [2020-10-27 15:44:53,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:53,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879398289] [2020-10-27 15:44:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 15:44:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:58,623 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:44:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:44:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 15:44:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 15:44:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 15:44:59,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879398289] [2020-10-27 15:44:59,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:59,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:59,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269192266] [2020-10-27 15:44:59,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:59,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:59,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:59,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:59,338 INFO L87 Difference]: Start difference. First operand 6997 states and 9202 transitions. Second operand 5 states. [2020-10-27 15:45:00,579 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 15:45:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:02,731 INFO L93 Difference]: Finished difference Result 14067 states and 18617 transitions. [2020-10-27 15:45:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:45:02,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-27 15:45:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:02,768 INFO L225 Difference]: With dead ends: 14067 [2020-10-27 15:45:02,768 INFO L226 Difference]: Without dead ends: 7140 [2020-10-27 15:45:02,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:45:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2020-10-27 15:45:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7140. [2020-10-27 15:45:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7140 states. [2020-10-27 15:45:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7140 states to 7140 states and 9352 transitions. [2020-10-27 15:45:02,987 INFO L78 Accepts]: Start accepts. Automaton has 7140 states and 9352 transitions. Word has length 303 [2020-10-27 15:45:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:02,988 INFO L481 AbstractCegarLoop]: Abstraction has 7140 states and 9352 transitions. [2020-10-27 15:45:02,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:45:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 7140 states and 9352 transitions. [2020-10-27 15:45:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-27 15:45:03,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:03,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:03,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:45:03,018 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:03,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1026679982, now seen corresponding path program 1 times [2020-10-27 15:45:03,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:03,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176711846] [2020-10-27 15:45:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-27 15:45:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:45:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 15:45:08,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 15:45:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-27 15:45:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:08,531 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:08,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:08,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:08,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:08,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:08,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:08,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:08,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 15:45:08,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 15:45:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:08,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:08,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:08,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 15:45:08,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:45:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 135 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-27 15:45:09,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176711846] [2020-10-27 15:45:09,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:09,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:45:09,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000245326] [2020-10-27 15:45:09,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:45:09,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:09,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:45:09,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:45:09,286 INFO L87 Difference]: Start difference. First operand 7140 states and 9352 transitions. Second operand 9 states. [2020-10-27 15:45:10,038 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 15:45:10,710 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 15:45:11,297 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 15:45:12,128 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 15:45:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:15,320 INFO L93 Difference]: Finished difference Result 14500 states and 19082 transitions. [2020-10-27 15:45:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:45:15,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2020-10-27 15:45:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:15,360 INFO L225 Difference]: With dead ends: 14500 [2020-10-27 15:45:15,360 INFO L226 Difference]: Without dead ends: 7380 [2020-10-27 15:45:15,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:45:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2020-10-27 15:45:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 7236. [2020-10-27 15:45:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7236 states. [2020-10-27 15:45:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9469 transitions. [2020-10-27 15:45:15,594 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9469 transitions. Word has length 322 [2020-10-27 15:45:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:15,595 INFO L481 AbstractCegarLoop]: Abstraction has 7236 states and 9469 transitions. [2020-10-27 15:45:15,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:45:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9469 transitions. [2020-10-27 15:45:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-27 15:45:15,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:15,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:15,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:45:15,618 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:15,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1264741395, now seen corresponding path program 1 times [2020-10-27 15:45:15,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:15,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390725634] [2020-10-27 15:45:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:18,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 15:45:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 15:45:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 15:45:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 15:45:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:21,070 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:21,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:45:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:21,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:45:21,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 15:45:21,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 15:45:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 15:45:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:21,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:45:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 15:45:21,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390725634] [2020-10-27 15:45:21,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:21,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:21,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683199005] [2020-10-27 15:45:21,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:21,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:21,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:21,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:21,593 INFO L87 Difference]: Start difference. First operand 7236 states and 9469 transitions. Second operand 7 states. [2020-10-27 15:45:22,183 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:23,567 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:25,995 INFO L93 Difference]: Finished difference Result 20203 states and 29703 transitions. [2020-10-27 15:45:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:45:25,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-27 15:45:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:26,090 INFO L225 Difference]: With dead ends: 20203 [2020-10-27 15:45:26,091 INFO L226 Difference]: Without dead ends: 13076 [2020-10-27 15:45:26,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:45:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2020-10-27 15:45:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 12737. [2020-10-27 15:45:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12737 states. [2020-10-27 15:45:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 16681 transitions. [2020-10-27 15:45:26,611 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 16681 transitions. Word has length 332 [2020-10-27 15:45:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:26,612 INFO L481 AbstractCegarLoop]: Abstraction has 12737 states and 16681 transitions. [2020-10-27 15:45:26,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 16681 transitions. [2020-10-27 15:45:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-27 15:45:26,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:26,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:26,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:45:26,651 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1570791588, now seen corresponding path program 1 times [2020-10-27 15:45:26,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:26,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863264576] [2020-10-27 15:45:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:28,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 15:45:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 15:45:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:32,113 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:32,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:32,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:32,249 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:45:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:32,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:32,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 15:45:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-27 15:45:32,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863264576] [2020-10-27 15:45:32,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:32,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:45:32,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938334011] [2020-10-27 15:45:32,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:45:32,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:45:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:45:32,593 INFO L87 Difference]: Start difference. First operand 12737 states and 16681 transitions. Second operand 5 states. [2020-10-27 15:45:33,037 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:36,168 INFO L93 Difference]: Finished difference Result 32498 states and 43040 transitions. [2020-10-27 15:45:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:45:36,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-27 15:45:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:36,255 INFO L225 Difference]: With dead ends: 32498 [2020-10-27 15:45:36,256 INFO L226 Difference]: Without dead ends: 19870 [2020-10-27 15:45:36,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:45:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19870 states. [2020-10-27 15:45:37,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19870 to 19852. [2020-10-27 15:45:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19852 states. [2020-10-27 15:45:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19852 states to 19852 states and 25729 transitions. [2020-10-27 15:45:37,074 INFO L78 Accepts]: Start accepts. Automaton has 19852 states and 25729 transitions. Word has length 338 [2020-10-27 15:45:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:37,075 INFO L481 AbstractCegarLoop]: Abstraction has 19852 states and 25729 transitions. [2020-10-27 15:45:37,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:45:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 19852 states and 25729 transitions. [2020-10-27 15:45:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-27 15:45:37,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:37,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:37,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:45:37,124 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:37,124 INFO L82 PathProgramCache]: Analyzing trace with hash 151467484, now seen corresponding path program 1 times [2020-10-27 15:45:37,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:37,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153593946] [2020-10-27 15:45:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 15:45:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:45:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:42,514 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:42,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:42,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:42,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:42,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:42,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:42,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:42,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:42,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:45:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:42,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 15:45:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 15:45:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:42,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:45:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 15:45:43,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153593946] [2020-10-27 15:45:43,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:43,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:45:43,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549934084] [2020-10-27 15:45:43,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:45:43,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:45:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:45:43,023 INFO L87 Difference]: Start difference. First operand 19852 states and 25729 transitions. Second operand 8 states. [2020-10-27 15:45:43,279 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:43,629 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:45:44,552 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-27 15:45:47,373 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:51,303 INFO L93 Difference]: Finished difference Result 69675 states and 96884 transitions. [2020-10-27 15:45:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:45:51,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2020-10-27 15:45:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:51,875 INFO L225 Difference]: With dead ends: 69675 [2020-10-27 15:45:51,875 INFO L226 Difference]: Without dead ends: 49822 [2020-10-27 15:45:51,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:45:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49822 states. [2020-10-27 15:45:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49822 to 48551. [2020-10-27 15:45:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48551 states. [2020-10-27 15:45:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48551 states to 48551 states and 63275 transitions. [2020-10-27 15:45:53,276 INFO L78 Accepts]: Start accepts. Automaton has 48551 states and 63275 transitions. Word has length 352 [2020-10-27 15:45:53,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:53,277 INFO L481 AbstractCegarLoop]: Abstraction has 48551 states and 63275 transitions. [2020-10-27 15:45:53,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:45:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 48551 states and 63275 transitions. [2020-10-27 15:45:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-27 15:45:53,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:53,391 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:53,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:45:53,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash -266487235, now seen corresponding path program 1 times [2020-10-27 15:45:53,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:53,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962939699] [2020-10-27 15:45:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4086 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:45:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:57,873 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:58,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:58,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:45:58,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:45:58,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:45:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:45:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:45:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 15:45:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:45:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 15:45:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 15:45:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 150 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 15:45:58,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962939699] [2020-10-27 15:45:58,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:58,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:58,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117241307] [2020-10-27 15:45:58,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:58,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:58,463 INFO L87 Difference]: Start difference. First operand 48551 states and 63275 transitions. Second operand 7 states. [2020-10-27 15:45:58,763 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:59,338 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:02,968 INFO L93 Difference]: Finished difference Result 97215 states and 128403 transitions. [2020-10-27 15:46:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:46:02,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-27 15:46:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:03,179 INFO L225 Difference]: With dead ends: 97215 [2020-10-27 15:46:03,180 INFO L226 Difference]: Without dead ends: 48773 [2020-10-27 15:46:03,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:46:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48773 states. [2020-10-27 15:46:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48773 to 48215. [2020-10-27 15:46:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48215 states. [2020-10-27 15:46:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48215 states to 48215 states and 60949 transitions. [2020-10-27 15:46:04,894 INFO L78 Accepts]: Start accepts. Automaton has 48215 states and 60949 transitions. Word has length 356 [2020-10-27 15:46:04,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:04,895 INFO L481 AbstractCegarLoop]: Abstraction has 48215 states and 60949 transitions. [2020-10-27 15:46:04,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 48215 states and 60949 transitions. [2020-10-27 15:46:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-27 15:46:04,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:04,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:05,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:46:05,000 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash -771400789, now seen corresponding path program 1 times [2020-10-27 15:46:05,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:05,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984046435] [2020-10-27 15:46:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:10,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 15:46:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-27 15:46:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:10,486 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:46:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:10,628 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:46:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:10,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:10,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:10,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:46:10,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:10,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:10,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:10,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:46:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:10,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:10,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:46:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 15:46:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:46:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:46:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 130 proven. 80 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 15:46:11,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984046435] [2020-10-27 15:46:11,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:11,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:46:11,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400479106] [2020-10-27 15:46:11,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:46:11,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:11,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:46:11,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:46:11,400 INFO L87 Difference]: Start difference. First operand 48215 states and 60949 transitions. Second operand 8 states. [2020-10-27 15:46:11,662 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:12,167 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:46:13,356 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:46:14,318 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 15:46:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:19,451 INFO L93 Difference]: Finished difference Result 121530 states and 154598 transitions. [2020-10-27 15:46:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 15:46:19,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 357 [2020-10-27 15:46:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:19,759 INFO L225 Difference]: With dead ends: 121530 [2020-10-27 15:46:19,759 INFO L226 Difference]: Without dead ends: 83477 [2020-10-27 15:46:19,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:46:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83477 states. [2020-10-27 15:46:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83477 to 82743. [2020-10-27 15:46:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82743 states. [2020-10-27 15:46:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82743 states to 82743 states and 104289 transitions. [2020-10-27 15:46:22,481 INFO L78 Accepts]: Start accepts. Automaton has 82743 states and 104289 transitions. Word has length 357 [2020-10-27 15:46:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:22,481 INFO L481 AbstractCegarLoop]: Abstraction has 82743 states and 104289 transitions. [2020-10-27 15:46:22,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:46:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 82743 states and 104289 transitions. [2020-10-27 15:46:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-27 15:46:22,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:22,711 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:46:22,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:46:22,712 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1825644503, now seen corresponding path program 1 times [2020-10-27 15:46:22,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:22,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330273051] [2020-10-27 15:46:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 15:46:27,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:46:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,118 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:28,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:28,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:28,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:46:28,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:46:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:46:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 15:46:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:46:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 15:46:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 215 proven. 57 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-27 15:46:28,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330273051] [2020-10-27 15:46:28,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:28,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:28,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330909812] [2020-10-27 15:46:28,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:28,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:28,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:28,778 INFO L87 Difference]: Start difference. First operand 82743 states and 104289 transitions. Second operand 7 states. [2020-10-27 15:46:29,058 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:31,815 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:33,213 INFO L93 Difference]: Finished difference Result 165680 states and 210992 transitions. [2020-10-27 15:46:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:46:33,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-27 15:46:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:33,491 INFO L225 Difference]: With dead ends: 165680 [2020-10-27 15:46:33,491 INFO L226 Difference]: Without dead ends: 83046 [2020-10-27 15:46:33,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132