/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/Problem15_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:46:56,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:46:56,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:46:56,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:46:56,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:46:56,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:46:56,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:46:56,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:46:56,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:46:56,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:46:56,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:46:56,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:46:56,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:46:56,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:46:56,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:46:56,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:46:56,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:46:56,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:46:56,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:46:56,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:46:56,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:46:56,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:46:56,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:46:56,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:46:56,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:46:56,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:46:56,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:46:56,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:46:56,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:46:56,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:46:56,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:46:56,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:46:56,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:46:56,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:46:56,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:46:56,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:46:56,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:46:56,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:46:56,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:46:56,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:46:56,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:46:56,601 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 07:46:56,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:46:56,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:46:56,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:46:56,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:46:56,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:46:56,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:46:56,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:46:56,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:46:56,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:46:56,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:46:56,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:46:56,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:46:56,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:46:56,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:46:56,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:46:56,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:46:56,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:46:56,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:46:56,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:46:56,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:46:56,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:46:56,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:46:56,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:46:56,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:46:56,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:46:56,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:46:56,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:46:56,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:46:56,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:46:56,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:46:57,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:46:57,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:46:57,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:46:57,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:46:57,159 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:46:57,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2020-10-29 07:46:57,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b4f1c3d/fb96d5ca63774ad7b59538140bd11e19/FLAG71d086c2f [2020-10-29 07:46:58,313 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:46:58,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2020-10-29 07:46:58,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b4f1c3d/fb96d5ca63774ad7b59538140bd11e19/FLAG71d086c2f [2020-10-29 07:46:58,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b4f1c3d/fb96d5ca63774ad7b59538140bd11e19 [2020-10-29 07:46:58,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:46:58,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:46:58,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:46:58,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:46:58,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:46:58,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:46:58" (1/1) ... [2020-10-29 07:46:58,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:58, skipping insertion in model container [2020-10-29 07:46:58,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:46:58" (1/1) ... [2020-10-29 07:46:58,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:46:58,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:46:59,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:46:59,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:46:59,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:46:59,937 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:46:59,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59 WrapperNode [2020-10-29 07:46:59,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:46:59,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:46:59,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:46:59,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:46:59,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:46:59,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (1/1) ... [2020-10-29 07:47:00,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:47:00,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:47:00,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:47:00,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:47:00,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (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 07:47:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:47:00,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:47:00,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:47:00,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:47:00,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:47:00,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:47:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:47:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:47:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:47:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:47:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:47:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:47:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:47:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:47:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:47:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:47:04,173 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:47:04,174 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:47:04,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:47:04 BoogieIcfgContainer [2020-10-29 07:47:04,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:47:04,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:47:04,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:47:04,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:47:04,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:46:58" (1/3) ... [2020-10-29 07:47:04,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf6769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:47:04, skipping insertion in model container [2020-10-29 07:47:04,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:46:59" (2/3) ... [2020-10-29 07:47:04,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf6769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:47:04, skipping insertion in model container [2020-10-29 07:47:04,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:47:04" (3/3) ... [2020-10-29 07:47:04,190 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label28.c [2020-10-29 07:47:04,207 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:47:04,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:47:04,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:47:04,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:47:04,272 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:47:04,272 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:47:04,272 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:47:04,272 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:47:04,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:47:04,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:47:04,273 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:47:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:47:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 07:47:04,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:04,317 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] [2020-10-29 07:47:04,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash 287999495, now seen corresponding path program 1 times [2020-10-29 07:47:04,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:04,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981054582] [2020-10-29 07:47:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:05,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 07:47:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-29 07:47:05,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:05,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 07:47:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:47:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:47:05,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:05,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:05,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:05,545 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 07:47:05,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981054582] [2020-10-29 07:47:05,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:47:05,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:47:05,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161963699] [2020-10-29 07:47:05,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:47:05,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:05,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:47:05,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:47:05,585 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:47:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:14,853 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-29 07:47:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:47:14,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-29 07:47:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:14,889 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 07:47:14,891 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 07:47:14,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:47:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 07:47:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-29 07:47:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-29 07:47:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-29 07:47:15,112 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 39 [2020-10-29 07:47:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:15,113 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-29 07:47:15,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:47:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-29 07:47:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 07:47:15,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:15,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:15,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:47:15,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1496870164, now seen corresponding path program 1 times [2020-10-29 07:47:15,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:15,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534133572] [2020-10-29 07:47:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:47:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:47:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-29 07:47:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:47:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:47:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:17,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:47:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:47:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:17,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:47:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:47:17,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534133572] [2020-10-29 07:47:17,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:47:17,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:47:17,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776525182] [2020-10-29 07:47:17,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:17,756 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-29 07:47:17,908 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:47:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:28,390 INFO L93 Difference]: Finished difference Result 2066 states and 3031 transitions. [2020-10-29 07:47:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:47:28,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-29 07:47:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:28,418 INFO L225 Difference]: With dead ends: 2066 [2020-10-29 07:47:28,419 INFO L226 Difference]: Without dead ends: 1375 [2020-10-29 07:47:28,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-29 07:47:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1338. [2020-10-29 07:47:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-29 07:47:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-29 07:47:28,497 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 118 [2020-10-29 07:47:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:28,498 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-29 07:47:28,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-29 07:47:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 07:47:28,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:28,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:28,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:47:28,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:28,508 INFO L82 PathProgramCache]: Analyzing trace with hash 167353298, now seen corresponding path program 1 times [2020-10-29 07:47:28,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:28,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503796623] [2020-10-29 07:47:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 07:47:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2828 [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:47:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:31,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:31,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:47:31,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:31,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:47:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:47:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:47:32,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503796623] [2020-10-29 07:47:32,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:47:32,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:47:32,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093883571] [2020-10-29 07:47:32,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:32,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:32,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:32,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:32,700 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 7 states. [2020-10-29 07:47:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:41,339 INFO L93 Difference]: Finished difference Result 3015 states and 3823 transitions. [2020-10-29 07:47:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:47:41,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-29 07:47:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:41,356 INFO L225 Difference]: With dead ends: 3015 [2020-10-29 07:47:41,357 INFO L226 Difference]: Without dead ends: 1683 [2020-10-29 07:47:41,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:47:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-10-29 07:47:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1651. [2020-10-29 07:47:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-10-29 07:47:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2053 transitions. [2020-10-29 07:47:41,421 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2053 transitions. Word has length 239 [2020-10-29 07:47:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:41,422 INFO L481 AbstractCegarLoop]: Abstraction has 1651 states and 2053 transitions. [2020-10-29 07:47:41,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2053 transitions. [2020-10-29 07:47:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 07:47:41,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:41,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:41,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:47:41,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1659411941, now seen corresponding path program 1 times [2020-10-29 07:47:41,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:41,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644124122] [2020-10-29 07:47:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:43,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-29 07:47:43,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:47:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1959 [2020-10-29 07:47:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:43,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:47:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-29 07:47:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:43,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:47:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:43,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:44,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:44,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:44,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:47:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:47:44,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644124122] [2020-10-29 07:47:44,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:44,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:47:44,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655840388] [2020-10-29 07:47:44,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:47:44,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:47:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:47:44,992 INFO L87 Difference]: Start difference. First operand 1651 states and 2053 transitions. Second operand 6 states. [2020-10-29 07:47:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:56,839 INFO L93 Difference]: Finished difference Result 3961 states and 5104 transitions. [2020-10-29 07:47:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:47:56,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2020-10-29 07:47:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:56,864 INFO L225 Difference]: With dead ends: 3961 [2020-10-29 07:47:56,865 INFO L226 Difference]: Without dead ends: 2623 [2020-10-29 07:47:56,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:47:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2020-10-29 07:47:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2611. [2020-10-29 07:47:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-10-29 07:47:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3156 transitions. [2020-10-29 07:47:56,967 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3156 transitions. Word has length 313 [2020-10-29 07:47:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:56,968 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 3156 transitions. [2020-10-29 07:47:56,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:47:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3156 transitions. [2020-10-29 07:47:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 07:47:56,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:56,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:47:56,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:47:56,976 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1685623550, now seen corresponding path program 1 times [2020-10-29 07:47:56,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:56,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017290683] [2020-10-29 07:47:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:01,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 07:48:01,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:48:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4857 [2020-10-29 07:48:01,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:01,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:48:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-29 07:48:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:02,148 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:48:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:02,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:02,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:02,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:48:02,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:02,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:02,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:02,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:48:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:48:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:02,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:02,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:48:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:48:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:48:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:48:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-10-29 07:48:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:48:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 121 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:48:03,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017290683] [2020-10-29 07:48:03,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:03,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:48:03,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36035210] [2020-10-29 07:48:03,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:48:03,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:03,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:48:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:48:03,878 INFO L87 Difference]: Start difference. First operand 2611 states and 3156 transitions. Second operand 6 states. [2020-10-29 07:48:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:15,334 INFO L93 Difference]: Finished difference Result 6229 states and 7898 transitions. [2020-10-29 07:48:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:48:15,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-10-29 07:48:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:15,356 INFO L225 Difference]: With dead ends: 6229 [2020-10-29 07:48:15,356 INFO L226 Difference]: Without dead ends: 3287 [2020-10-29 07:48:15,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:48:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-10-29 07:48:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3247. [2020-10-29 07:48:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-29 07:48:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 3721 transitions. [2020-10-29 07:48:15,485 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 3721 transitions. Word has length 334 [2020-10-29 07:48:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:15,486 INFO L481 AbstractCegarLoop]: Abstraction has 3247 states and 3721 transitions. [2020-10-29 07:48:15,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:48:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 3721 transitions. [2020-10-29 07:48:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-29 07:48:15,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:15,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:15,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:48:15,497 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2026183964, now seen corresponding path program 1 times [2020-10-29 07:48:15,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:15,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677853475] [2020-10-29 07:48:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-29 07:48:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-10-29 07:48:17,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:17,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:48:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:48:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:48:17,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:17,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:18,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:18,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:48:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 07:48:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:18,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:18,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:48:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:48:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:18,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:18,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:48:18,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:18,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:48:18,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:18,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:18,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:48:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:48:18,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677853475] [2020-10-29 07:48:18,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:18,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:48:18,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421450499] [2020-10-29 07:48:18,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:48:18,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:48:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:48:18,863 INFO L87 Difference]: Start difference. First operand 3247 states and 3721 transitions. Second operand 8 states. [2020-10-29 07:48:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:32,935 INFO L93 Difference]: Finished difference Result 9420 states and 11404 transitions. [2020-10-29 07:48:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:48:32,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-10-29 07:48:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:32,976 INFO L225 Difference]: With dead ends: 9420 [2020-10-29 07:48:32,977 INFO L226 Difference]: Without dead ends: 6486 [2020-10-29 07:48:32,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:48:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2020-10-29 07:48:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6446. [2020-10-29 07:48:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6446 states. [2020-10-29 07:48:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 7523 transitions. [2020-10-29 07:48:33,200 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 7523 transitions. Word has length 398 [2020-10-29 07:48:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:33,201 INFO L481 AbstractCegarLoop]: Abstraction has 6446 states and 7523 transitions. [2020-10-29 07:48:33,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:48:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 7523 transitions. [2020-10-29 07:48:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-29 07:48:33,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:33,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:33,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:48:33,214 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1551861798, now seen corresponding path program 1 times [2020-10-29 07:48:33,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:33,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616220761] [2020-10-29 07:48:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:36,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:36,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3033 [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:48:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:48:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:36,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:48:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 07:48:36,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:36,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:48:36,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:48:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:37,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:37,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:37,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:48:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:48:37,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616220761] [2020-10-29 07:48:37,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:37,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:48:37,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80887229] [2020-10-29 07:48:37,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:37,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:37,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:37,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:37,813 INFO L87 Difference]: Start difference. First operand 6446 states and 7523 transitions. Second operand 7 states. [2020-10-29 07:48:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:50,042 INFO L93 Difference]: Finished difference Result 13918 states and 16352 transitions. [2020-10-29 07:48:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:48:50,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-29 07:48:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:50,083 INFO L225 Difference]: With dead ends: 13918 [2020-10-29 07:48:50,083 INFO L226 Difference]: Without dead ends: 7785 [2020-10-29 07:48:50,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2020-10-29 07:48:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7729. [2020-10-29 07:48:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2020-10-29 07:48:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 8903 transitions. [2020-10-29 07:48:50,296 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 8903 transitions. Word has length 424 [2020-10-29 07:48:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:50,297 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 8903 transitions. [2020-10-29 07:48:50,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 8903 transitions. [2020-10-29 07:48:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-29 07:48:50,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:50,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:50,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:48:50,302 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1219023570, now seen corresponding path program 1 times [2020-10-29 07:48:50,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:50,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210391962] [2020-10-29 07:48:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:48:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 07:48:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:48:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:48:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:48:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:48:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:48:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:48:51,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210391962] [2020-10-29 07:48:51,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:51,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:48:51,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609845585] [2020-10-29 07:48:51,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:48:51,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:48:51,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:51,702 INFO L87 Difference]: Start difference. First operand 7729 states and 8903 transitions. Second operand 5 states. [2020-10-29 07:49:00,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:00,280 INFO L93 Difference]: Finished difference Result 17752 states and 20979 transitions. [2020-10-29 07:49:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:49:00,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-29 07:49:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:00,333 INFO L225 Difference]: With dead ends: 17752 [2020-10-29 07:49:00,334 INFO L226 Difference]: Without dead ends: 10336 [2020-10-29 07:49:00,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:49:00,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2020-10-29 07:49:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 10321. [2020-10-29 07:49:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10321 states. [2020-10-29 07:49:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 12185 transitions. [2020-10-29 07:49:00,653 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 12185 transitions. Word has length 436 [2020-10-29 07:49:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:00,654 INFO L481 AbstractCegarLoop]: Abstraction has 10321 states and 12185 transitions. [2020-10-29 07:49:00,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:49:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 12185 transitions. [2020-10-29 07:49:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-29 07:49:00,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:00,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:49:00,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:49:00,661 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1876714197, now seen corresponding path program 1 times [2020-10-29 07:49:00,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:00,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507066317] [2020-10-29 07:49:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-29 07:49:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:49:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:49:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:06,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:49:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:49:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-29 07:49:06,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:06,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:49:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:49:07,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507066317] [2020-10-29 07:49:07,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:07,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:07,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313646618] [2020-10-29 07:49:07,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:07,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:07,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:07,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:07,272 INFO L87 Difference]: Start difference. First operand 10321 states and 12185 transitions. Second operand 7 states. [2020-10-29 07:49:10,581 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:49:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:20,495 INFO L93 Difference]: Finished difference Result 21651 states and 25647 transitions. [2020-10-29 07:49:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:20,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 476 [2020-10-29 07:49:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:20,542 INFO L225 Difference]: With dead ends: 21651 [2020-10-29 07:49:20,542 INFO L226 Difference]: Without dead ends: 11328 [2020-10-29 07:49:20,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:49:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11328 states. [2020-10-29 07:49:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11328 to 11280. [2020-10-29 07:49:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11280 states. [2020-10-29 07:49:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11280 states to 11280 states and 13232 transitions. [2020-10-29 07:49:20,846 INFO L78 Accepts]: Start accepts. Automaton has 11280 states and 13232 transitions. Word has length 476 [2020-10-29 07:49:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 11280 states and 13232 transitions. [2020-10-29 07:49:20,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 11280 states and 13232 transitions. [2020-10-29 07:49:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-29 07:49:20,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:20,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:20,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:49:20,856 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1455968894, now seen corresponding path program 1 times [2020-10-29 07:49:20,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:20,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180528941] [2020-10-29 07:49:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-29 07:49:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3641 [2020-10-29 07:49:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:49:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:49:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:24,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:49:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:25,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:49:25,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:49:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:49:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:49:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:49:25,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180528941] [2020-10-29 07:49:25,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:25,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:25,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528844266] [2020-10-29 07:49:25,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:25,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:25,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:25,558 INFO L87 Difference]: Start difference. First operand 11280 states and 13232 transitions. Second operand 7 states. [2020-10-29 07:49:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:37,221 INFO L93 Difference]: Finished difference Result 25071 states and 30350 transitions. [2020-10-29 07:49:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:37,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 512 [2020-10-29 07:49:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:37,278 INFO L225 Difference]: With dead ends: 25071 [2020-10-29 07:49:37,278 INFO L226 Difference]: Without dead ends: 14104 [2020-10-29 07:49:37,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14104 states. [2020-10-29 07:49:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14104 to 12812. [2020-10-29 07:49:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12812 states. [2020-10-29 07:49:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12812 states to 12812 states and 15464 transitions. [2020-10-29 07:49:37,657 INFO L78 Accepts]: Start accepts. Automaton has 12812 states and 15464 transitions. Word has length 512 [2020-10-29 07:49:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:37,658 INFO L481 AbstractCegarLoop]: Abstraction has 12812 states and 15464 transitions. [2020-10-29 07:49:37,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:37,658 INFO L276 IsEmpty]: Start isEmpty. Operand 12812 states and 15464 transitions. [2020-10-29 07:49:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-29 07:49:37,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:37,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:37,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:49:37,669 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1552789880, now seen corresponding path program 1 times [2020-10-29 07:49:37,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:37,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126651329] [2020-10-29 07:49:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2714 [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:49:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:49:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:40,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:40,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:49:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:49:41,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:49:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:41,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:41,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:49:41,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:49:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:41,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:49:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:49:41,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126651329] [2020-10-29 07:49:41,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:41,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:41,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155010543] [2020-10-29 07:49:41,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:41,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:41,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:41,588 INFO L87 Difference]: Start difference. First operand 12812 states and 15464 transitions. Second operand 7 states. [2020-10-29 07:49:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:51,640 INFO L93 Difference]: Finished difference Result 27854 states and 34253 transitions. [2020-10-29 07:49:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:51,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-29 07:49:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:51,691 INFO L225 Difference]: With dead ends: 27854 [2020-10-29 07:49:51,692 INFO L226 Difference]: Without dead ends: 15355 [2020-10-29 07:49:51,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:49:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15355 states. [2020-10-29 07:49:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15355 to 15337. [2020-10-29 07:49:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15337 states. [2020-10-29 07:49:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 18429 transitions. [2020-10-29 07:49:52,069 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 18429 transitions. Word has length 529 [2020-10-29 07:49:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:52,070 INFO L481 AbstractCegarLoop]: Abstraction has 15337 states and 18429 transitions. [2020-10-29 07:49:52,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 18429 transitions. [2020-10-29 07:49:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 07:49:52,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:52,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:52,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:49:52,078 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1664872415, now seen corresponding path program 1 times [2020-10-29 07:49:52,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:52,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879817780] [2020-10-29 07:49:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:55,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3312 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:49:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:55,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:55,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:49:55,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:55,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:55,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:49:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:49:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:49:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:49:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:49:56,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879817780] [2020-10-29 07:49:56,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:56,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:56,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002210888] [2020-10-29 07:49:56,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:56,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:56,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:56,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:56,500 INFO L87 Difference]: Start difference. First operand 15337 states and 18429 transitions. Second operand 7 states. [2020-10-29 07:50:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:08,162 INFO L93 Difference]: Finished difference Result 40304 states and 49544 transitions. [2020-10-29 07:50:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:08,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-29 07:50:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:08,264 INFO L225 Difference]: With dead ends: 40304 [2020-10-29 07:50:08,264 INFO L226 Difference]: Without dead ends: 24650 [2020-10-29 07:50:08,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24650 states. [2020-10-29 07:50:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24650 to 22480. [2020-10-29 07:50:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22480 states. [2020-10-29 07:50:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22480 states to 22480 states and 26605 transitions. [2020-10-29 07:50:08,972 INFO L78 Accepts]: Start accepts. Automaton has 22480 states and 26605 transitions. Word has length 537 [2020-10-29 07:50:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:08,973 INFO L481 AbstractCegarLoop]: Abstraction has 22480 states and 26605 transitions. [2020-10-29 07:50:08,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 22480 states and 26605 transitions. [2020-10-29 07:50:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-29 07:50:08,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:08,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:08,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:50:08,981 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1615289779, now seen corresponding path program 1 times [2020-10-29 07:50:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:08,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916703158] [2020-10-29 07:50:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-29 07:50:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-29 07:50:14,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:14,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:50:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:50:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:50:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:50:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:14,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:50:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:50:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:50:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:50:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 07:50:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 451 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:50:15,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916703158] [2020-10-29 07:50:15,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:15,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:50:15,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521429977] [2020-10-29 07:50:15,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:50:15,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:50:15,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:50:15,806 INFO L87 Difference]: Start difference. First operand 22480 states and 26605 transitions. Second operand 10 states. [2020-10-29 07:50:18,222 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-29 07:50:19,340 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:50:22,378 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-29 07:50:23,706 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-29 07:50:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:29,775 INFO L93 Difference]: Finished difference Result 45683 states and 54079 transitions. [2020-10-29 07:50:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 07:50:29,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 585 [2020-10-29 07:50:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:29,864 INFO L225 Difference]: With dead ends: 45683 [2020-10-29 07:50:29,865 INFO L226 Difference]: Without dead ends: 23207 [2020-10-29 07:50:29,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-29 07:50:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23207 states. [2020-10-29 07:50:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23207 to 23173. [2020-10-29 07:50:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23173 states. [2020-10-29 07:50:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23173 states to 23173 states and 27066 transitions. [2020-10-29 07:50:30,462 INFO L78 Accepts]: Start accepts. Automaton has 23173 states and 27066 transitions. Word has length 585 [2020-10-29 07:50:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:30,464 INFO L481 AbstractCegarLoop]: Abstraction has 23173 states and 27066 transitions. [2020-10-29 07:50:30,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:50:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 23173 states and 27066 transitions. [2020-10-29 07:50:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-10-29 07:50:30,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:30,477 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:30,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:50:30,478 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:30,479 INFO L82 PathProgramCache]: Analyzing trace with hash -800561, now seen corresponding path program 1 times [2020-10-29 07:50:30,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:30,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776299285] [2020-10-29 07:50:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking...