/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:20,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:20,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:20,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:20,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:20,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:20,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:20,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:20,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:20,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:20,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:20,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:20,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:20,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:20,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:20,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:20,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:20,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:20,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:20,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:20,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:20,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:20,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:20,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:20,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:20,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:20,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:20,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:20,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:20,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:20,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:20,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:20,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:20,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:20,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:20,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:20,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:20,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:20,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:20,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:20,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:20,602 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 04:58:20,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:20,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:20,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:20,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:20,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:20,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:20,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:20,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:20,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:20,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:20,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:20,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:20,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:20,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:20,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:20,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:20,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:20,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:20,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:20,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:20,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:20,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:20,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:20,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:20,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:20,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:20,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:20,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:20,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:20,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:21,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:21,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:21,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:21,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:21,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:21,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-29 04:58:21,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a86cc8d87/ffd86050cb6246d8b61d7c8b9adab48d/FLAG0d68bcb3c [2020-10-29 04:58:21,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:21,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label39.c [2020-10-29 04:58:21,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a86cc8d87/ffd86050cb6246d8b61d7c8b9adab48d/FLAG0d68bcb3c [2020-10-29 04:58:22,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a86cc8d87/ffd86050cb6246d8b61d7c8b9adab48d [2020-10-29 04:58:22,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:22,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:22,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:22,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:22,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:22,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:22" (1/1) ... [2020-10-29 04:58:22,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd53e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:22, skipping insertion in model container [2020-10-29 04:58:22,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:22" (1/1) ... [2020-10-29 04:58:22,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:22,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:22,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:22,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:23,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:23,248 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:23,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23 WrapperNode [2020-10-29 04:58:23,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:23,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:23,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:23,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:23,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... [2020-10-29 04:58:23,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:23,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:23,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:23,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:23,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:25,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:25,456 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:25,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:25 BoogieIcfgContainer [2020-10-29 04:58:25,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:25,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:25,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:25,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:25,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:22" (1/3) ... [2020-10-29 04:58:25,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753c984b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:25, skipping insertion in model container [2020-10-29 04:58:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:23" (2/3) ... [2020-10-29 04:58:25,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753c984b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:25, skipping insertion in model container [2020-10-29 04:58:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:25" (3/3) ... [2020-10-29 04:58:25,468 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2020-10-29 04:58:25,480 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:25,485 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:25,499 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:25,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:25,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:25,528 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:25,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:25,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:25,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:25,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:25,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 04:58:25,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:25,576 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] [2020-10-29 04:58:25,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1235881672, now seen corresponding path program 1 times [2020-10-29 04:58:25,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:25,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619595019] [2020-10-29 04:58:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:29,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 04:58:29,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3987 [2020-10-29 04:58:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:29,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 04:58:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:58:30,406 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:30,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 04:58:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:30,603 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 04:58:30,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619595019] [2020-10-29 04:58:30,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:30,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:58:30,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660696620] [2020-10-29 04:58:30,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:58:30,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:58:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:58:30,634 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:58:30,906 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:34,188 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:58:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:34,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-29 04:58:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:34,221 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:58:34,221 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:58:34,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:58:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:58:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:58:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:58:34,358 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 154 [2020-10-29 04:58:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:34,362 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:58:34,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:58:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:58:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 04:58:34,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:34,379 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] [2020-10-29 04:58:34,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:58:34,380 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash 257579049, now seen corresponding path program 1 times [2020-10-29 04:58:34,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:34,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691346199] [2020-10-29 04:58:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 04:58:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3431 [2020-10-29 04:58:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:37,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:58:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:58:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:38,352 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:38,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:38,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:58:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:38,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 04:58:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:38,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:38,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:58:38,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:58:38,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:38,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:38,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:38,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:38,612 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 04:58:38,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691346199] [2020-10-29 04:58:38,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:38,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:38,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474661026] [2020-10-29 04:58:38,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:38,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:38,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:38,619 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-29 04:58:38,950 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:42,149 INFO L93 Difference]: Finished difference Result 1382 states and 2143 transitions. [2020-10-29 04:58:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:42,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-29 04:58:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:42,168 INFO L225 Difference]: With dead ends: 1382 [2020-10-29 04:58:42,168 INFO L226 Difference]: Without dead ends: 912 [2020-10-29 04:58:42,170 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 04:58:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-29 04:58:42,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 905. [2020-10-29 04:58:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-29 04:58:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1322 transitions. [2020-10-29 04:58:42,238 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1322 transitions. Word has length 163 [2020-10-29 04:58:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:42,239 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1322 transitions. [2020-10-29 04:58:42,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:42,239 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1322 transitions. [2020-10-29 04:58:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 04:58:42,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:42,250 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:58:42,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:58:42,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:42,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1617841963, now seen corresponding path program 1 times [2020-10-29 04:58:42,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:42,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399809380] [2020-10-29 04:58:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:42,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 04:58:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:58:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 04:58:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:47,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:58:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 04:58:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:47,664 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:47,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:47,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:47,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:47,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:58:47,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:47,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:58:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:58:47,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399809380] [2020-10-29 04:58:47,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:47,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:47,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100104106] [2020-10-29 04:58:47,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:47,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:47,923 INFO L87 Difference]: Start difference. First operand 905 states and 1322 transitions. Second operand 5 states. [2020-10-29 04:58:48,394 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:51,275 INFO L93 Difference]: Finished difference Result 2650 states and 3902 transitions. [2020-10-29 04:58:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:51,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-29 04:58:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:51,282 INFO L225 Difference]: With dead ends: 2650 [2020-10-29 04:58:51,282 INFO L226 Difference]: Without dead ends: 908 [2020-10-29 04:58:51,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 04:58:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-29 04:58:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 904. [2020-10-29 04:58:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-29 04:58:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1320 transitions. [2020-10-29 04:58:51,323 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1320 transitions. Word has length 173 [2020-10-29 04:58:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:51,323 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1320 transitions. [2020-10-29 04:58:51,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1320 transitions. [2020-10-29 04:58:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 04:58:51,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:51,328 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:58:51,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:58:51,328 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:51,329 INFO L82 PathProgramCache]: Analyzing trace with hash -354758389, now seen corresponding path program 1 times [2020-10-29 04:58:51,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:51,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789287538] [2020-10-29 04:58:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 04:58:53,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-29 04:58:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 04:58:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:58:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:53,610 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:53,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:58:53,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:53,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:53,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:53,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:58:53,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 04:58:53,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:53,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:58:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:53,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789287538] [2020-10-29 04:58:53,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:53,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:53,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811157388] [2020-10-29 04:58:53,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:53,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:53,887 INFO L87 Difference]: Start difference. First operand 904 states and 1320 transitions. Second operand 5 states. [2020-10-29 04:58:54,261 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:57,497 INFO L93 Difference]: Finished difference Result 2645 states and 3929 transitions. [2020-10-29 04:58:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:57,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-29 04:58:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:57,508 INFO L225 Difference]: With dead ends: 2645 [2020-10-29 04:58:57,509 INFO L226 Difference]: Without dead ends: 1747 [2020-10-29 04:58:57,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-29 04:58:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1740. [2020-10-29 04:58:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-10-29 04:58:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2511 transitions. [2020-10-29 04:58:57,575 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2511 transitions. Word has length 172 [2020-10-29 04:58:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:57,576 INFO L481 AbstractCegarLoop]: Abstraction has 1740 states and 2511 transitions. [2020-10-29 04:58:57,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2511 transitions. [2020-10-29 04:58:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 04:58:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:57,582 INFO L422 BasicCegarLoop]: trace histogram [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 04:58:57,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:58:57,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 49133640, now seen corresponding path program 1 times [2020-10-29 04:58:57,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:57,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705297494] [2020-10-29 04:58:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:02,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:02,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 04:59:02,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:02,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 04:59:02,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:02,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:59:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:59:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:03,023 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:03,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:03,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:59:03,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:03,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:03,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:03,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:03,183 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:59:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:03,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:03,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:59:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:03,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:03,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:59:03,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:03,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:59:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:59:03,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705297494] [2020-10-29 04:59:03,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:03,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:03,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360098105] [2020-10-29 04:59:03,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:03,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:03,326 INFO L87 Difference]: Start difference. First operand 1740 states and 2511 transitions. Second operand 5 states. [2020-10-29 04:59:03,664 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:06,863 INFO L93 Difference]: Finished difference Result 5177 states and 7644 transitions. [2020-10-29 04:59:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:06,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-29 04:59:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:06,896 INFO L225 Difference]: With dead ends: 5177 [2020-10-29 04:59:06,896 INFO L226 Difference]: Without dead ends: 3443 [2020-10-29 04:59:06,901 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 04:59:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2020-10-29 04:59:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 3419. [2020-10-29 04:59:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3419 states. [2020-10-29 04:59:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5006 transitions. [2020-10-29 04:59:07,025 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5006 transitions. Word has length 180 [2020-10-29 04:59:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:07,025 INFO L481 AbstractCegarLoop]: Abstraction has 3419 states and 5006 transitions. [2020-10-29 04:59:07,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5006 transitions. [2020-10-29 04:59:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 04:59:07,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:07,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:07,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:59:07,036 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1017556512, now seen corresponding path program 1 times [2020-10-29 04:59:07,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:07,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010043534] [2020-10-29 04:59:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 04:59:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-29 04:59:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:08,938 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:59:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:08,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:59:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:59:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:59:09,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010043534] [2020-10-29 04:59:09,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:09,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:09,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909941004] [2020-10-29 04:59:09,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:59:09,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:59:09,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:09,427 INFO L87 Difference]: Start difference. First operand 3419 states and 5006 transitions. Second operand 6 states. [2020-10-29 04:59:09,689 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:12,938 INFO L93 Difference]: Finished difference Result 10130 states and 15837 transitions. [2020-10-29 04:59:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:59:12,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-10-29 04:59:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:12,988 INFO L225 Difference]: With dead ends: 10130 [2020-10-29 04:59:12,988 INFO L226 Difference]: Without dead ends: 6717 [2020-10-29 04:59:12,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:59:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2020-10-29 04:59:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6236. [2020-10-29 04:59:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2020-10-29 04:59:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 9051 transitions. [2020-10-29 04:59:13,217 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 9051 transitions. Word has length 190 [2020-10-29 04:59:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:13,218 INFO L481 AbstractCegarLoop]: Abstraction has 6236 states and 9051 transitions. [2020-10-29 04:59:13,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:59:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 9051 transitions. [2020-10-29 04:59:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 04:59:13,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:13,235 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:13,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:13,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash -849645569, now seen corresponding path program 1 times [2020-10-29 04:59:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:13,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058806659] [2020-10-29 04:59:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2165 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:59:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,725 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:15,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:59:15,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:59:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:59:16,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058806659] [2020-10-29 04:59:16,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:16,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:16,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104999345] [2020-10-29 04:59:16,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:16,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:16,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:16,007 INFO L87 Difference]: Start difference. First operand 6236 states and 9051 transitions. Second operand 7 states. [2020-10-29 04:59:16,419 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:16,691 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:21,841 INFO L93 Difference]: Finished difference Result 15676 states and 24185 transitions. [2020-10-29 04:59:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:21,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-29 04:59:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:21,915 INFO L225 Difference]: With dead ends: 15676 [2020-10-29 04:59:21,916 INFO L226 Difference]: Without dead ends: 9446 [2020-10-29 04:59:21,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 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 04:59:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9446 states. [2020-10-29 04:59:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9446 to 9113. [2020-10-29 04:59:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9113 states. [2020-10-29 04:59:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 12937 transitions. [2020-10-29 04:59:22,318 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 12937 transitions. Word has length 202 [2020-10-29 04:59:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:22,319 INFO L481 AbstractCegarLoop]: Abstraction has 9113 states and 12937 transitions. [2020-10-29 04:59:22,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 12937 transitions. [2020-10-29 04:59:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 04:59:22,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:22,352 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:22,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:22,353 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1915760165, now seen corresponding path program 1 times [2020-10-29 04:59:22,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:22,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767508157] [2020-10-29 04:59:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:27,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 04:59:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:59:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:27,784 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:27,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:27,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:27,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:27,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:27,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:59:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:59:28,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767508157] [2020-10-29 04:59:28,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:28,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:28,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155970325] [2020-10-29 04:59:28,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:28,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:28,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:28,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:28,080 INFO L87 Difference]: Start difference. First operand 9113 states and 12937 transitions. Second operand 5 states. [2020-10-29 04:59:28,335 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:31,416 INFO L93 Difference]: Finished difference Result 22219 states and 32234 transitions. [2020-10-29 04:59:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:31,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 04:59:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:31,474 INFO L225 Difference]: With dead ends: 22219 [2020-10-29 04:59:31,474 INFO L226 Difference]: Without dead ends: 13112 [2020-10-29 04:59:31,508 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 04:59:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13112 states. [2020-10-29 04:59:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 12263. [2020-10-29 04:59:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12263 states. [2020-10-29 04:59:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12263 states to 12263 states and 17315 transitions. [2020-10-29 04:59:31,915 INFO L78 Accepts]: Start accepts. Automaton has 12263 states and 17315 transitions. Word has length 204 [2020-10-29 04:59:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:31,916 INFO L481 AbstractCegarLoop]: Abstraction has 12263 states and 17315 transitions. [2020-10-29 04:59:31,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12263 states and 17315 transitions. [2020-10-29 04:59:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 04:59:31,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:31,958 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:31,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:59:31,958 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2127407429, now seen corresponding path program 1 times [2020-10-29 04:59:31,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:31,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470020649] [2020-10-29 04:59:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:34,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 04:59:34,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-29 04:59:34,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:34,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:59:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:59:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:34,552 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:34,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:34,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:59:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:59:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:34,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:34,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:34,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:59:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:59:34,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470020649] [2020-10-29 04:59:34,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:34,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:34,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972260934] [2020-10-29 04:59:34,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:34,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:34,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:34,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:34,958 INFO L87 Difference]: Start difference. First operand 12263 states and 17315 transitions. Second operand 7 states. [2020-10-29 04:59:35,214 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:35,580 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:38,472 INFO L93 Difference]: Finished difference Result 24845 states and 36647 transitions. [2020-10-29 04:59:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:59:38,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-29 04:59:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:38,529 INFO L225 Difference]: With dead ends: 24845 [2020-10-29 04:59:38,529 INFO L226 Difference]: Without dead ends: 12588 [2020-10-29 04:59:38,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2020-10-29 04:59:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 12426. [2020-10-29 04:59:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12426 states. [2020-10-29 04:59:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12426 states to 12426 states and 16762 transitions. [2020-10-29 04:59:39,101 INFO L78 Accepts]: Start accepts. Automaton has 12426 states and 16762 transitions. Word has length 204 [2020-10-29 04:59:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:39,101 INFO L481 AbstractCegarLoop]: Abstraction has 12426 states and 16762 transitions. [2020-10-29 04:59:39,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12426 states and 16762 transitions. [2020-10-29 04:59:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 04:59:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:39,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 04:59:39,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:59:39,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash 121299602, now seen corresponding path program 1 times [2020-10-29 04:59:39,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:39,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557763025] [2020-10-29 04:59:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 04:59:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:59:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:59:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:44,534 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:44,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:59:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:59:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:44,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:59:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:59:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:59:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 04:59:44,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:59:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:59:45,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557763025] [2020-10-29 04:59:45,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:45,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:59:45,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666558692] [2020-10-29 04:59:45,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:59:45,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:45,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:59:45,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:59:45,060 INFO L87 Difference]: Start difference. First operand 12426 states and 16762 transitions. Second operand 9 states. [2020-10-29 04:59:45,302 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:45,770 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:46,398 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:50,880 INFO L93 Difference]: Finished difference Result 31275 states and 44311 transitions. [2020-10-29 04:59:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:59:50,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-10-29 04:59:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:50,949 INFO L225 Difference]: With dead ends: 31275 [2020-10-29 04:59:50,949 INFO L226 Difference]: Without dead ends: 18855 [2020-10-29 04:59:50,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:59:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18855 states. [2020-10-29 04:59:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18855 to 18209. [2020-10-29 04:59:51,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18209 states. [2020-10-29 04:59:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18209 states to 18209 states and 22190 transitions. [2020-10-29 04:59:51,623 INFO L78 Accepts]: Start accepts. Automaton has 18209 states and 22190 transitions. Word has length 211 [2020-10-29 04:59:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:51,624 INFO L481 AbstractCegarLoop]: Abstraction has 18209 states and 22190 transitions. [2020-10-29 04:59:51,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:59:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 18209 states and 22190 transitions. [2020-10-29 04:59:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 04:59:51,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:51,668 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:59:51,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:59:51,669 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 311628959, now seen corresponding path program 1 times [2020-10-29 04:59:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245205174] [2020-10-29 04:59:51,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:56,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:56,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 04:59:56,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 04:59:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,037 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:59:57,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:59:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:59:57,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:59:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:59:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:59:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:59:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:57,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:59:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 152 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 04:59:57,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245205174] [2020-10-29 04:59:57,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:57,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122679566] [2020-10-29 04:59:57,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:57,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:57,540 INFO L87 Difference]: Start difference. First operand 18209 states and 22190 transitions. Second operand 7 states. [2020-10-29 04:59:57,797 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:00,549 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:00:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:01,664 INFO L93 Difference]: Finished difference Result 42459 states and 52168 transitions. [2020-10-29 05:00:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:01,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-29 05:00:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:01,757 INFO L225 Difference]: With dead ends: 42459 [2020-10-29 05:00:01,757 INFO L226 Difference]: Without dead ends: 30245 [2020-10-29 05:00:01,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 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 05:00:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30245 states. [2020-10-29 05:00:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30245 to 27186. [2020-10-29 05:00:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27186 states. [2020-10-29 05:00:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27186 states to 27186 states and 33357 transitions. [2020-10-29 05:00:02,553 INFO L78 Accepts]: Start accepts. Automaton has 27186 states and 33357 transitions. Word has length 257 [2020-10-29 05:00:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:02,553 INFO L481 AbstractCegarLoop]: Abstraction has 27186 states and 33357 transitions. [2020-10-29 05:00:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 27186 states and 33357 transitions. [2020-10-29 05:00:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 05:00:02,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:02,638 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 05:00:02,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:00:02,639 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1438662043, now seen corresponding path program 1 times [2020-10-29 05:00:02,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:02,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21652190] [2020-10-29 05:00:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:07,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:07,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 05:00:07,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 05:00:07,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,059 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:08,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:08,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:08,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:00:08,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:00:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 05:00:08,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:00:08,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 05:00:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:00:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 05:00:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:08,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 05:00:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 235 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 05:00:08,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21652190] [2020-10-29 05:00:08,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:08,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:00:08,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345019783] [2020-10-29 05:00:08,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 05:00:08,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:08,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 05:00:08,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:00:08,813 INFO L87 Difference]: Start difference. First operand 27186 states and 33357 transitions. Second operand 10 states. [2020-10-29 05:00:09,082 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:00:09,631 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:00:13,046 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 163 [2020-10-29 05:00:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:17,183 INFO L93 Difference]: Finished difference Result 82347 states and 101904 transitions. [2020-10-29 05:00:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 05:00:17,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 277 [2020-10-29 05:00:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:17,382 INFO L225 Difference]: With dead ends: 82347 [2020-10-29 05:00:17,382 INFO L226 Difference]: Without dead ends: 55227 [2020-10-29 05:00:17,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:00:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55227 states. [2020-10-29 05:00:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55227 to 53171. [2020-10-29 05:00:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53171 states. [2020-10-29 05:00:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53171 states to 53171 states and 66183 transitions. [2020-10-29 05:00:19,514 INFO L78 Accepts]: Start accepts. Automaton has 53171 states and 66183 transitions. Word has length 277 [2020-10-29 05:00:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:19,516 INFO L481 AbstractCegarLoop]: Abstraction has 53171 states and 66183 transitions. [2020-10-29 05:00:19,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 05:00:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 53171 states and 66183 transitions. [2020-10-29 05:00:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 05:00:19,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:19,610 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:19,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:00:19,610 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 946032551, now seen corresponding path program 1 times [2020-10-29 05:00:19,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:19,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095790764] [2020-10-29 05:00:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 05:00:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,453 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:00:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:00:25,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:00:25,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 05:00:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 05:00:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 166 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 05:00:25,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095790764] [2020-10-29 05:00:25,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:25,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:25,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8755318] [2020-10-29 05:00:25,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:25,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:25,966 INFO L87 Difference]: Start difference. First operand 53171 states and 66183 transitions. Second operand 7 states. [2020-10-29 05:00:26,554 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:26,926 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:32,598 INFO L93 Difference]: Finished difference Result 149548 states and 211369 transitions. [2020-10-29 05:00:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:00:32,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-29 05:00:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:33,353 INFO L225 Difference]: With dead ends: 149548 [2020-10-29 05:00:33,354 INFO L226 Difference]: Without dead ends: 100076 [2020-10-29 05:00:33,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100076 states. [2020-10-29 05:00:37,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100076 to 94316. [2020-10-29 05:00:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94316 states. [2020-10-29 05:00:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94316 states to 94316 states and 115445 transitions. [2020-10-29 05:00:38,202 INFO L78 Accepts]: Start accepts. Automaton has 94316 states and 115445 transitions. Word has length 293 [2020-10-29 05:00:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:38,203 INFO L481 AbstractCegarLoop]: Abstraction has 94316 states and 115445 transitions. [2020-10-29 05:00:38,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 94316 states and 115445 transitions. [2020-10-29 05:00:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 05:00:38,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:38,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:38,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:00:38,347 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2079856617, now seen corresponding path program 1 times [2020-10-29 05:00:38,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:38,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130184162] [2020-10-29 05:00:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:43,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:00:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 05:00:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:43,740 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:43,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:43,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:43,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:43,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:43,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:00:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:00:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:00:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:43,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:00:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:00:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:00:44,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 05:00:44,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:00:44,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 05:00:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 05:00:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 188 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 05:00:44,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130184162] [2020-10-29 05:00:44,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:44,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:44,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599617898] [2020-10-29 05:00:44,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:44,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:44,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:44,381 INFO L87 Difference]: Start difference. First operand 94316 states and 115445 transitions. Second operand 8 states. [2020-10-29 05:00:44,869 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:45,261 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:54,537 INFO L93 Difference]: Finished difference Result 320226 states and 427065 transitions. [2020-10-29 05:00:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 05:00:54,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2020-10-29 05:00:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:55,863 INFO L225 Difference]: With dead ends: 320226 [2020-10-29 05:00:55,863 INFO L226 Difference]: Without dead ends: 226854 [2020-10-29 05:00:56,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:00:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226854 states. [2020-10-29 05:01:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226854 to 221151. [2020-10-29 05:01:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221151 states. [2020-10-29 05:01:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221151 states to 221151 states and 273213 transitions. [2020-10-29 05:01:03,611 INFO L78 Accepts]: Start accepts. Automaton has 221151 states and 273213 transitions. Word has length 293 [2020-10-29 05:01:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:03,611 INFO L481 AbstractCegarLoop]: Abstraction has 221151 states and 273213 transitions. [2020-10-29 05:01:03,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:01:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 221151 states and 273213 transitions. [2020-10-29 05:01:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 05:01:03,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:03,905 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:01:03,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:01:03,905 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash 503143792, now seen corresponding path program 1 times [2020-10-29 05:01:03,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:03,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833761442] [2020-10-29 05:01:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:08,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 05:01:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 05:01:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:09,243 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:09,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:01:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:01:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 05:01:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 05:01:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 05:01:09,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833761442] [2020-10-29 05:01:09,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:09,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:09,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280057302] [2020-10-29 05:01:09,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:09,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:09,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:09,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:09,770 INFO L87 Difference]: Start difference. First operand 221151 states and 273213 transitions. Second operand 7 states. [2020-10-29 05:01:10,038 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:14,362 INFO L93 Difference]: Finished difference Result 360638 states and 443310 transitions. [2020-10-29 05:01:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:01:14,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-29 05:01:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:14,826 INFO L225 Difference]: With dead ends: 360638 [2020-10-29 05:01:14,826 INFO L226 Difference]: Without dead ends: 140395 [2020-10-29 05:01:15,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:01:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140395 states. [2020-10-29 05:01:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140395 to 136175. [2020-10-29 05:01:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136175 states. [2020-10-29 05:01:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136175 states to 136175 states and 161593 transitions. [2020-10-29 05:01:18,680 INFO L78 Accepts]: Start accepts. Automaton has 136175 states and 161593 transitions. Word has length 313 [2020-10-29 05:01:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 136175 states and 161593 transitions. [2020-10-29 05:01:18,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 136175 states and 161593 transitions. [2020-10-29 05:01:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 05:01:18,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:18,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:18,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:01:18,792 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash -545262311, now seen corresponding path program 1 times [2020-10-29 05:01:18,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:18,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433568075] [2020-10-29 05:01:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 05:01:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:24,174 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:24,300 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:24,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 05:01:24,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 05:01:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 05:01:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:01:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:24,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 05:01:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:24,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 05:01:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 237 proven. 35 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 05:01:24,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433568075] [2020-10-29 05:01:24,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:24,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:24,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754288074] [2020-10-29 05:01:24,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:24,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:24,776 INFO L87 Difference]: Start difference. First operand 136175 states and 161593 transitions. Second operand 7 states. [2020-10-29 05:01:25,161 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:26,282 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:01:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:32,262 INFO L93 Difference]: Finished difference Result 253172 states and 314627 transitions. [2020-10-29 05:01:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:01:32,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-29 05:01:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:32,800 INFO L225 Difference]: With dead ends: 253172 [2020-10-29 05:01:32,800 INFO L226 Difference]: Without dead ends: 146718 [2020-10-29 05:01:32,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:01:33,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146718 states. [2020-10-29 05:01:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146718 to 142483. [2020-10-29 05:01:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142483 states. [2020-10-29 05:01:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142483 states to 142483 states and 168316 transitions. [2020-10-29 05:01:36,937 INFO L78 Accepts]: Start accepts. Automaton has 142483 states and 168316 transitions. Word has length 334 [2020-10-29 05:01:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:36,938 INFO L481 AbstractCegarLoop]: Abstraction has 142483 states and 168316 transitions. [2020-10-29 05:01:36,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 142483 states and 168316 transitions. [2020-10-29 05:01:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 05:01:37,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:37,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:37,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 05:01:37,049 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2141702982, now seen corresponding path program 1 times [2020-10-29 05:01:37,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:37,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235489731] [2020-10-29 05:01:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:37,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking...