/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:54:38,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:54:38,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:54:38,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:54:38,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:54:38,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:54:38,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:54:38,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:54:38,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:54:38,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:54:38,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:54:38,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:54:38,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:54:38,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:54:38,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:54:38,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:54:38,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:54:38,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:54:38,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:54:38,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:54:38,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:54:38,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:54:38,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:54:38,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:54:38,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:54:38,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:54:38,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:54:38,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:54:38,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:54:38,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:54:38,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:54:38,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:54:38,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:54:38,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:54:38,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:54:38,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:54:38,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:54:38,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:54:38,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:54:38,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:54:38,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:54:38,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:54:38,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:54:38,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:54:38,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:54:38,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:54:38,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:54:38,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:54:38,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:54:38,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:54:38,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:54:38,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:54:38,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:54:38,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:54:38,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:54:38,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:54:38,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:54:38,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:54:38,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:54:38,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:54:38,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:54:38,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:54:38,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:54:38,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:54:38,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:54:38,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:54:38,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:54:38,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:54:38,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:54:38,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:54:38,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:54:38,950 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:54:38,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21.c [2020-10-29 04:54:39,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2becbed7c/beab893b8e2e485b8e7ecd53e4eb9ae4/FLAG91868be3f [2020-10-29 04:54:39,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:54:39,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label21.c [2020-10-29 04:54:39,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2becbed7c/beab893b8e2e485b8e7ecd53e4eb9ae4/FLAG91868be3f [2020-10-29 04:54:40,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2becbed7c/beab893b8e2e485b8e7ecd53e4eb9ae4 [2020-10-29 04:54:40,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:54:40,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:54:40,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:40,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:54:40,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:54:40,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:40" (1/1) ... [2020-10-29 04:54:40,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ca349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:40, skipping insertion in model container [2020-10-29 04:54:40,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:40" (1/1) ... [2020-10-29 04:54:40,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:54:40,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:54:40,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:40,881 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:54:41,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:41,265 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:54:41,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41 WrapperNode [2020-10-29 04:54:41,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:41,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:54:41,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:54:41,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:54:41,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... [2020-10-29 04:54:41,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:54:41,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:54:41,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:54:41,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:54:41,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:54:41,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:54:41,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:54:41,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:54:41,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:54:41,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:54:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:54:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:54:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:54:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:54:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:54:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:54:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:54:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:54:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:54:43,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:54:43,801 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:54:43,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:43 BoogieIcfgContainer [2020-10-29 04:54:43,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:54:43,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:54:43,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:54:43,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:54:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:54:40" (1/3) ... [2020-10-29 04:54:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406348ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:43, skipping insertion in model container [2020-10-29 04:54:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:41" (2/3) ... [2020-10-29 04:54:43,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406348ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:43, skipping insertion in model container [2020-10-29 04:54:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:43" (3/3) ... [2020-10-29 04:54:43,813 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label21.c [2020-10-29 04:54:43,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:54:43,832 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:54:43,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:54:43,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:54:43,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:54:43,878 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:54:43,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:54:43,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:54:43,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:54:43,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:54:43,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:54:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:54:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 04:54:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:43,929 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] [2020-10-29 04:54:43,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash -955215892, now seen corresponding path program 1 times [2020-10-29 04:54:43,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:43,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141969992] [2020-10-29 04:54:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:49,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:49,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 04:54:49,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 04:54:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:49,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 04:54:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:54:50,051 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:50,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:54:50,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:50,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:50,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:50,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:54:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:54:50,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141969992] [2020-10-29 04:54:50,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:54:50,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:54:50,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975691473] [2020-10-29 04:54:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:54:50,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:54:50,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:54:50,283 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:54:50,638 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:54,468 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-29 04:54:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:54,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-29 04:54:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:54,504 INFO L225 Difference]: With dead ends: 863 [2020-10-29 04:54:54,504 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 04:54:54,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:54:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 04:54:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 04:54:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:54:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-29 04:54:54,614 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 209 [2020-10-29 04:54:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:54,616 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-29 04:54:54,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:54:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-29 04:54:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 04:54:54,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:54,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:54,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:54:54,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:54,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1656057307, now seen corresponding path program 1 times [2020-10-29 04:54:54,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:54,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558497684] [2020-10-29 04:54:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 04:54:58,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3632 [2020-10-29 04:54:58,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:58,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:54:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 04:54:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:54:59,259 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:59,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:59,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:59,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:54:59,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:59,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 04:54:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:59,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:54:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:00,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558497684] [2020-10-29 04:55:00,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:00,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:00,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923811880] [2020-10-29 04:55:00,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:00,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:00,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:00,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:00,307 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-29 04:55:00,835 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 04:55:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:04,367 INFO L93 Difference]: Finished difference Result 1119 states and 1824 transitions. [2020-10-29 04:55:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:04,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-29 04:55:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:04,383 INFO L225 Difference]: With dead ends: 1119 [2020-10-29 04:55:04,383 INFO L226 Difference]: Without dead ends: 609 [2020-10-29 04:55:04,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-10-29 04:55:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 604. [2020-10-29 04:55:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-29 04:55:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 888 transitions. [2020-10-29 04:55:04,462 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 888 transitions. Word has length 218 [2020-10-29 04:55:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:04,464 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 888 transitions. [2020-10-29 04:55:04,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 888 transitions. [2020-10-29 04:55:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 04:55:04,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:04,472 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] [2020-10-29 04:55:04,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:04,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:04,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:04,476 INFO L82 PathProgramCache]: Analyzing trace with hash 775876767, now seen corresponding path program 1 times [2020-10-29 04:55:04,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:04,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035444413] [2020-10-29 04:55:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:09,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:09,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 04:55:09,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4842 [2020-10-29 04:55:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:09,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:55:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:55:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:55:09,862 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:09,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:09,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:55:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:09,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:10,032 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:55:10,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:55:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:55:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:10,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035444413] [2020-10-29 04:55:10,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:10,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:10,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333012389] [2020-10-29 04:55:10,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:10,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:10,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:10,221 INFO L87 Difference]: Start difference. First operand 604 states and 888 transitions. Second operand 5 states. [2020-10-29 04:55:10,494 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:13,851 INFO L93 Difference]: Finished difference Result 1625 states and 2479 transitions. [2020-10-29 04:55:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:13,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 04:55:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:13,858 INFO L225 Difference]: With dead ends: 1625 [2020-10-29 04:55:13,859 INFO L226 Difference]: Without dead ends: 1027 [2020-10-29 04:55:13,862 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 [2020-10-29 04:55:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-29 04:55:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1023. [2020-10-29 04:55:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-10-29 04:55:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1378 transitions. [2020-10-29 04:55:13,909 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1378 transitions. Word has length 220 [2020-10-29 04:55:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:13,910 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1378 transitions. [2020-10-29 04:55:13,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1378 transitions. [2020-10-29 04:55:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 04:55:13,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:13,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:55:13,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:13,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:13,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2119166276, now seen corresponding path program 1 times [2020-10-29 04:55:13,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:13,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115688115] [2020-10-29 04:55:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:15,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:18,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 04:55:18,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:55:18,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:18,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 04:55:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:55:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:19,456 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:19,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:19,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:19,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:19,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:19,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:55:19,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:55:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:19,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:55:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:55:19,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115688115] [2020-10-29 04:55:19,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:19,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:19,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203204928] [2020-10-29 04:55:19,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:19,807 INFO L87 Difference]: Start difference. First operand 1023 states and 1378 transitions. Second operand 5 states. [2020-10-29 04:55:20,205 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:23,234 INFO L93 Difference]: Finished difference Result 2888 states and 3990 transitions. [2020-10-29 04:55:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:23,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-29 04:55:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:23,247 INFO L225 Difference]: With dead ends: 2888 [2020-10-29 04:55:23,248 INFO L226 Difference]: Without dead ends: 1871 [2020-10-29 04:55:23,252 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 [2020-10-29 04:55:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2020-10-29 04:55:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1862. [2020-10-29 04:55:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-10-29 04:55:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2476 transitions. [2020-10-29 04:55:23,328 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2476 transitions. Word has length 247 [2020-10-29 04:55:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:23,329 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 2476 transitions. [2020-10-29 04:55:23,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2476 transitions. [2020-10-29 04:55:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 04:55:23,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:23,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:55:23,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:55:23,338 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -760756406, now seen corresponding path program 1 times [2020-10-29 04:55:23,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:23,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312853779] [2020-10-29 04:55:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 04:55:28,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 04:55:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 04:55:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,823 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:28,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:55:28,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:55:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 04:55:29,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:55:29,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312853779] [2020-10-29 04:55:29,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:29,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:29,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182778083] [2020-10-29 04:55:29,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:29,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:29,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:29,295 INFO L87 Difference]: Start difference. First operand 1862 states and 2476 transitions. Second operand 5 states. [2020-10-29 04:55:29,807 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:33,024 INFO L93 Difference]: Finished difference Result 5407 states and 7350 transitions. [2020-10-29 04:55:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:33,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-29 04:55:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:33,055 INFO L225 Difference]: With dead ends: 5407 [2020-10-29 04:55:33,056 INFO L226 Difference]: Without dead ends: 3551 [2020-10-29 04:55:33,062 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 [2020-10-29 04:55:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2020-10-29 04:55:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3546. [2020-10-29 04:55:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-29 04:55:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4594 transitions. [2020-10-29 04:55:33,248 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4594 transitions. Word has length 254 [2020-10-29 04:55:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:33,248 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 4594 transitions. [2020-10-29 04:55:33,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4594 transitions. [2020-10-29 04:55:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 04:55:33,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:33,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:33,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:55:33,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2029534899, now seen corresponding path program 1 times [2020-10-29 04:55:33,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:33,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923407163] [2020-10-29 04:55:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:38,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:38,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:55:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-29 04:55:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:38,823 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:38,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:38,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:55:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:38,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:38,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:38,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:38,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:38,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:38,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:38,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:55:38,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:38,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:39,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:39,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:55:39,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:39,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:55:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:55:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:39,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:39,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:55:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 04:55:39,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:39,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:55:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:55:39,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923407163] [2020-10-29 04:55:39,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:39,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:39,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828648219] [2020-10-29 04:55:39,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:39,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:39,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:39,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:39,381 INFO L87 Difference]: Start difference. First operand 3546 states and 4594 transitions. Second operand 5 states. [2020-10-29 04:55:39,931 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:43,172 INFO L93 Difference]: Finished difference Result 9813 states and 12887 transitions. [2020-10-29 04:55:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:43,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-29 04:55:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:43,195 INFO L225 Difference]: With dead ends: 9813 [2020-10-29 04:55:43,195 INFO L226 Difference]: Without dead ends: 3549 [2020-10-29 04:55:43,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2020-10-29 04:55:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3545. [2020-10-29 04:55:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-10-29 04:55:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4592 transitions. [2020-10-29 04:55:43,316 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4592 transitions. Word has length 270 [2020-10-29 04:55:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:43,317 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4592 transitions. [2020-10-29 04:55:43,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4592 transitions. [2020-10-29 04:55:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 04:55:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:43,330 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:43,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:55:43,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash 494138229, now seen corresponding path program 1 times [2020-10-29 04:55:43,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:43,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84261785] [2020-10-29 04:55:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:44,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 04:55:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:55:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,893 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:49,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:49,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:55:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:49,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:49,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:55:49,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:49,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:55:49,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:49,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:55:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 04:55:49,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84261785] [2020-10-29 04:55:49,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:49,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:49,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000561841] [2020-10-29 04:55:49,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:49,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:49,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:49,215 INFO L87 Difference]: Start difference. First operand 3545 states and 4592 transitions. Second operand 5 states. [2020-10-29 04:55:49,658 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:52,984 INFO L93 Difference]: Finished difference Result 8763 states and 11882 transitions. [2020-10-29 04:55:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:52,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-29 04:55:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:53,014 INFO L225 Difference]: With dead ends: 8763 [2020-10-29 04:55:53,014 INFO L226 Difference]: Without dead ends: 5224 [2020-10-29 04:55:53,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-29 04:55:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5217. [2020-10-29 04:55:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-10-29 04:55:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7034 transitions. [2020-10-29 04:55:53,171 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7034 transitions. Word has length 270 [2020-10-29 04:55:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:53,172 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 7034 transitions. [2020-10-29 04:55:53,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7034 transitions. [2020-10-29 04:55:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 04:55:53,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:53,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:53,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:55:53,193 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:53,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:53,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1369142417, now seen corresponding path program 1 times [2020-10-29 04:55:53,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:53,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692976943] [2020-10-29 04:55:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 324 [2020-10-29 04:55:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,678 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:58,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:55:58,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:55:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:55:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:59,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:55:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:55:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 04:55:59,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692976943] [2020-10-29 04:55:59,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:59,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:59,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291150498] [2020-10-29 04:55:59,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:55:59,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:59,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:55:59,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:59,541 INFO L87 Difference]: Start difference. First operand 5217 states and 7034 transitions. Second operand 8 states. [2020-10-29 04:55:59,845 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:00,342 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:01,786 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:03,514 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 04:56:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:08,854 INFO L93 Difference]: Finished difference Result 20446 states and 29268 transitions. [2020-10-29 04:56:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:56:08,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2020-10-29 04:56:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:08,955 INFO L225 Difference]: With dead ends: 20446 [2020-10-29 04:56:08,955 INFO L226 Difference]: Without dead ends: 15209 [2020-10-29 04:56:08,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:56:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15209 states. [2020-10-29 04:56:09,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15209 to 15069. [2020-10-29 04:56:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15069 states. [2020-10-29 04:56:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15069 states to 15069 states and 20331 transitions. [2020-10-29 04:56:09,609 INFO L78 Accepts]: Start accepts. Automaton has 15069 states and 20331 transitions. Word has length 319 [2020-10-29 04:56:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:09,610 INFO L481 AbstractCegarLoop]: Abstraction has 15069 states and 20331 transitions. [2020-10-29 04:56:09,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:09,610 INFO L276 IsEmpty]: Start isEmpty. Operand 15069 states and 20331 transitions. [2020-10-29 04:56:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-29 04:56:09,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:09,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:56:09,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:09,664 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1767468283, now seen corresponding path program 1 times [2020-10-29 04:56:09,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:09,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689071592] [2020-10-29 04:56:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:10,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:56:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:15,116 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:15,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:56:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:56:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 04:56:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:15,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:56:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:15,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 143 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:56:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689071592] [2020-10-29 04:56:15,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:15,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332152231] [2020-10-29 04:56:15,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:15,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:15,802 INFO L87 Difference]: Start difference. First operand 15069 states and 20331 transitions. Second operand 7 states. [2020-10-29 04:56:16,382 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:17,160 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:56:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:23,115 INFO L93 Difference]: Finished difference Result 42977 states and 64224 transitions. [2020-10-29 04:56:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:23,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-29 04:56:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:23,462 INFO L225 Difference]: With dead ends: 42977 [2020-10-29 04:56:23,462 INFO L226 Difference]: Without dead ends: 27914 [2020-10-29 04:56:23,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27914 states. [2020-10-29 04:56:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27914 to 27431. [2020-10-29 04:56:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27431 states. [2020-10-29 04:56:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27431 states to 27431 states and 37814 transitions. [2020-10-29 04:56:24,499 INFO L78 Accepts]: Start accepts. Automaton has 27431 states and 37814 transitions. Word has length 341 [2020-10-29 04:56:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:24,500 INFO L481 AbstractCegarLoop]: Abstraction has 27431 states and 37814 transitions. [2020-10-29 04:56:24,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27431 states and 37814 transitions. [2020-10-29 04:56:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 04:56:24,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:24,599 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:56:24,600 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 351597388, now seen corresponding path program 1 times [2020-10-29 04:56:24,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:24,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716080765] [2020-10-29 04:56:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:56:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,986 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:30,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:30,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:30,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:30,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:30,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:56:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:30,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:56:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:30,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:56:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:56:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 04:56:30,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716080765] [2020-10-29 04:56:30,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:30,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:30,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489234556] [2020-10-29 04:56:30,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:30,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:30,817 INFO L87 Difference]: Start difference. First operand 27431 states and 37814 transitions. Second operand 7 states. [2020-10-29 04:56:31,329 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:33,254 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:36,184 INFO L93 Difference]: Finished difference Result 66886 states and 101355 transitions. [2020-10-29 04:56:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:36,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 04:56:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:36,441 INFO L225 Difference]: With dead ends: 66886 [2020-10-29 04:56:36,441 INFO L226 Difference]: Without dead ends: 39461 [2020-10-29 04:56:36,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:56:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39461 states. [2020-10-29 04:56:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39461 to 38422. [2020-10-29 04:56:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38422 states. [2020-10-29 04:56:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38422 states to 38422 states and 51505 transitions. [2020-10-29 04:56:38,090 INFO L78 Accepts]: Start accepts. Automaton has 38422 states and 51505 transitions. Word has length 350 [2020-10-29 04:56:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:38,091 INFO L481 AbstractCegarLoop]: Abstraction has 38422 states and 51505 transitions. [2020-10-29 04:56:38,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 38422 states and 51505 transitions. [2020-10-29 04:56:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 04:56:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:38,181 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2020-10-29 04:56:38,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:56:38,181 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash 39985199, now seen corresponding path program 1 times [2020-10-29 04:56:38,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:38,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594499903] [2020-10-29 04:56:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-29 04:56:43,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:56:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,601 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:56:43,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:56:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:56:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:44,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:56:44,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 04:56:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:44,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 04:56:44,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594499903] [2020-10-29 04:56:44,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:44,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842104296] [2020-10-29 04:56:44,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:44,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:44,310 INFO L87 Difference]: Start difference. First operand 38422 states and 51505 transitions. Second operand 8 states. [2020-10-29 04:56:44,595 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:45,063 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:49,130 INFO L93 Difference]: Finished difference Result 75765 states and 105373 transitions. [2020-10-29 04:56:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:49,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 351 [2020-10-29 04:56:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:49,321 INFO L225 Difference]: With dead ends: 75765 [2020-10-29 04:56:49,321 INFO L226 Difference]: Without dead ends: 37588 [2020-10-29 04:56:49,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:56:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37588 states. [2020-10-29 04:56:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37588 to 37189. [2020-10-29 04:56:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37189 states. [2020-10-29 04:56:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37189 states to 37189 states and 47961 transitions. [2020-10-29 04:56:50,783 INFO L78 Accepts]: Start accepts. Automaton has 37189 states and 47961 transitions. Word has length 351 [2020-10-29 04:56:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:50,783 INFO L481 AbstractCegarLoop]: Abstraction has 37189 states and 47961 transitions. [2020-10-29 04:56:50,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 37189 states and 47961 transitions. [2020-10-29 04:56:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 04:56:51,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:51,089 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:51,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:56:51,090 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1308049271, now seen corresponding path program 1 times [2020-10-29 04:56:51,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:51,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560071143] [2020-10-29 04:56:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 04:56:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:56:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:56,508 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:56,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:56,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:56,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:56:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:56,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:56,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:56:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 04:56:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:56:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 04:56:57,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560071143] [2020-10-29 04:56:57,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:57,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:57,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74908405] [2020-10-29 04:56:57,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:57,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:57,345 INFO L87 Difference]: Start difference. First operand 37189 states and 47961 transitions. Second operand 7 states. [2020-10-29 04:56:57,813 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:00,362 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:57:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:02,434 INFO L93 Difference]: Finished difference Result 84273 states and 115451 transitions. [2020-10-29 04:57:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:02,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-29 04:57:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:02,634 INFO L225 Difference]: With dead ends: 84273 [2020-10-29 04:57:02,634 INFO L226 Difference]: Without dead ends: 47952 [2020-10-29 04:57:02,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:57:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47952 states. [2020-10-29 04:57:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47952 to 45758. [2020-10-29 04:57:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45758 states. [2020-10-29 04:57:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45758 states to 45758 states and 57566 transitions. [2020-10-29 04:57:04,368 INFO L78 Accepts]: Start accepts. Automaton has 45758 states and 57566 transitions. Word has length 355 [2020-10-29 04:57:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:04,369 INFO L481 AbstractCegarLoop]: Abstraction has 45758 states and 57566 transitions. [2020-10-29 04:57:04,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 45758 states and 57566 transitions. [2020-10-29 04:57:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-29 04:57:04,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:04,607 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:04,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:04,607 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:04,608 INFO L82 PathProgramCache]: Analyzing trace with hash 530726310, now seen corresponding path program 1 times [2020-10-29 04:57:04,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:04,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600932309] [2020-10-29 04:57:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:57:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:57:09,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:57:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:09,985 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:09,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:57:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:57:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:57:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:57:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:57:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:57:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:57:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:57:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:57:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:57:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 204 proven. 43 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:57:10,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600932309] [2020-10-29 04:57:10,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:10,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:57:10,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751511966] [2020-10-29 04:57:10,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:57:10,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:57:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:57:10,769 INFO L87 Difference]: Start difference. First operand 45758 states and 57566 transitions. Second operand 9 states. [2020-10-29 04:57:11,050 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:11,679 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-29 04:57:13,659 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:16,274 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:17,581 INFO L93 Difference]: Finished difference Result 81250 states and 102925 transitions. [2020-10-29 04:57:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:57:17,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 370 [2020-10-29 04:57:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:17,739 INFO L225 Difference]: With dead ends: 81250 [2020-10-29 04:57:17,739 INFO L226 Difference]: Without dead ends: 40927 [2020-10-29 04:57:17,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:57:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40927 states. [2020-10-29 04:57:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40927 to 38426. [2020-10-29 04:57:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38426 states. [2020-10-29 04:57:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38426 states to 38426 states and 46333 transitions. [2020-10-29 04:57:19,107 INFO L78 Accepts]: Start accepts. Automaton has 38426 states and 46333 transitions. Word has length 370 [2020-10-29 04:57:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:19,107 INFO L481 AbstractCegarLoop]: Abstraction has 38426 states and 46333 transitions. [2020-10-29 04:57:19,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:57:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 38426 states and 46333 transitions. [2020-10-29 04:57:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-29 04:57:19,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:19,185 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:19,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:57:19,186 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:19,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1433361579, now seen corresponding path program 1 times [2020-10-29 04:57:19,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:19,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723960040] [2020-10-29 04:57:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:57:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 04:57:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,580 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:57:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:57:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:57:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 04:57:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:57:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 169 proven. 60 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-29 04:57:25,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723960040] [2020-10-29 04:57:25,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:25,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:57:25,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566129189] [2020-10-29 04:57:25,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:57:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:57:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:25,419 INFO L87 Difference]: Start difference. First operand 38426 states and 46333 transitions. Second operand 8 states. [2020-10-29 04:57:25,701 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:26,346 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-29 04:57:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:30,044 INFO L93 Difference]: Finished difference Result 63593 states and 77174 transitions. [2020-10-29 04:57:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:57:30,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 384 [2020-10-29 04:57:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:30,135 INFO L225 Difference]: With dead ends: 63593 [2020-10-29 04:57:30,135 INFO L226 Difference]: Without dead ends: 31914 [2020-10-29 04:57:30,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:57:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31914 states. [2020-10-29 04:57:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31914 to 30228. [2020-10-29 04:57:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30228 states. [2020-10-29 04:57:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30228 states to 30228 states and 36418 transitions. [2020-10-29 04:57:30,921 INFO L78 Accepts]: Start accepts. Automaton has 30228 states and 36418 transitions. Word has length 384 [2020-10-29 04:57:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:30,922 INFO L481 AbstractCegarLoop]: Abstraction has 30228 states and 36418 transitions. [2020-10-29 04:57:30,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:57:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 30228 states and 36418 transitions. [2020-10-29 04:57:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-29 04:57:30,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:30,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:30,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:57:30,964 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:30,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1624522634, now seen corresponding path program 1 times [2020-10-29 04:57:30,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:30,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844327061] [2020-10-29 04:57:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 04:57:36,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:57:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,334 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:36,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:57:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:57:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:57:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 04:57:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:37,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 291 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 04:57:37,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844327061] [2020-10-29 04:57:37,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:37,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:37,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902302403] [2020-10-29 04:57:37,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:37,391 INFO L87 Difference]: Start difference. First operand 30228 states and 36418 transitions. Second operand 7 states. [2020-10-29 04:57:37,667 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:57:38,806 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:41,242 INFO L93 Difference]: Finished difference Result 56910 states and 68803 transitions. [2020-10-29 04:57:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:57:41,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 426 [2020-10-29 04:57:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:41,326 INFO L225 Difference]: With dead ends: 56910 [2020-10-29 04:57:41,326 INFO L226 Difference]: Without dead ends: 34705 [2020-10-29 04:57:41,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34705 states. [2020-10-29 04:57:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34705 to 34645. [2020-10-29 04:57:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34645 states. [2020-10-29 04:57:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34645 states to 34645 states and 41389 transitions. [2020-10-29 04:57:42,245 INFO L78 Accepts]: Start accepts. Automaton has 34645 states and 41389 transitions. Word has length 426 [2020-10-29 04:57:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:42,245 INFO L481 AbstractCegarLoop]: Abstraction has 34645 states and 41389 transitions. [2020-10-29 04:57:42,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 34645 states and 41389 transitions. [2020-10-29 04:57:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-29 04:57:42,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:42,312 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:42,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:57:42,314 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -848761459, now seen corresponding path program 1 times [2020-10-29 04:57:42,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:42,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893456678] [2020-10-29 04:57:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:57:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:47,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-29 04:57:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:47,768 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:57:47,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:47,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:57:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:47,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:57:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:57:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:57:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:48,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 04:57:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:48,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 04:57:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:48,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:57:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 04:57:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 04:57:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 230 proven. 152 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-29 04:57:49,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893456678] [2020-10-29 04:57:49,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:49,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:57:49,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638380322] [2020-10-29 04:57:49,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:57:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:57:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:57:49,537 INFO L87 Difference]: Start difference. First operand 34645 states and 41389 transitions. Second operand 10 states. [2020-10-29 04:57:49,821 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:57:50,678 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 166 [2020-10-29 04:57:52,543 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 163 [2020-10-29 04:57:54,706 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 165