/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:00:56,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:00:56,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:00:56,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:00:56,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:00:56,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:00:56,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:00:56,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:00:56,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:00:56,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:00:56,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:00:56,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:00:56,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:00:56,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:00:56,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:00:56,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:00:56,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:00:56,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:00:56,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:00:56,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:00:56,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:00:56,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:00:56,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:00:56,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:00:56,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:00:56,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:00:56,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:00:56,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:00:56,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:00:56,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:00:56,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:00:56,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:00:56,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:00:56,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:00:56,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:00:56,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:00:56,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:00:56,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:00:56,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:00:56,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:00:56,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:00:56,637 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 05:00:56,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:00:56,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:00:56,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:00:56,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:00:56,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:00:56,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:00:56,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:00:56,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:00:56,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:00:56,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:00:56,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:00:56,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:00:56,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:00:56,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:00:56,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:00:56,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:00:56,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:00:56,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:00:56,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:00:56,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:00:56,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:00:56,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:00:56,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:00:56,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:00:56,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:00:56,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:00:56,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:00:56,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:00:56,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:00:56,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:00:57,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:00:57,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:00:57,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:00:57,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:00:57,172 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:00:57,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-29 05:00:57,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c49682a/2906424705a7459b81dbc6065da1d695/FLAG2ee0c913b [2020-10-29 05:00:58,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:00:58,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label52.c [2020-10-29 05:00:58,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c49682a/2906424705a7459b81dbc6065da1d695/FLAG2ee0c913b [2020-10-29 05:00:58,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51c49682a/2906424705a7459b81dbc6065da1d695 [2020-10-29 05:00:58,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:00:58,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:00:58,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:00:58,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:00:58,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:00:58,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:58" (1/1) ... [2020-10-29 05:00:58,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5388bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:58, skipping insertion in model container [2020-10-29 05:00:58,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:58" (1/1) ... [2020-10-29 05:00:58,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:00:58,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:00:59,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:00:59,151 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:00:59,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:00:59,424 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:00:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59 WrapperNode [2020-10-29 05:00:59,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:00:59,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:00:59,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:00:59,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:00:59,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (1/1) ... [2020-10-29 05:00:59,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:00:59,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:00:59,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:00:59,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:00:59,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (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 05:00:59,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:00:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:00:59,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:00:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:00:59,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:00:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:00:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:00:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:00:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:00:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:00:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:00:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:00:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:00:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:00:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:00:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:00:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:00:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:00:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:01:01,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:01:01,999 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:01:02,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:02 BoogieIcfgContainer [2020-10-29 05:01:02,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:01:02,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:01:02,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:01:02,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:01:02,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:00:58" (1/3) ... [2020-10-29 05:01:02,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b51705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:02, skipping insertion in model container [2020-10-29 05:01:02,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:59" (2/3) ... [2020-10-29 05:01:02,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b51705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:02, skipping insertion in model container [2020-10-29 05:01:02,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:02" (3/3) ... [2020-10-29 05:01:02,015 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label52.c [2020-10-29 05:01:02,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:01:02,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:01:02,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:01:02,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:01:02,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:01:02,098 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:01:02,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:01:02,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:01:02,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:01:02,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:01:02,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:01:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 05:01:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 05:01:02,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:02,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:02,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1425330932, now seen corresponding path program 1 times [2020-10-29 05:01:02,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:02,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128491617] [2020-10-29 05:01:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 05:01:06,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3940 [2020-10-29 05:01:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:06,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 05:01:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:01:07,101 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:07,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:01:07,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:07,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:07,242 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 05:01:07,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128491617] [2020-10-29 05:01:07,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:01:07,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:01:07,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658583257] [2020-10-29 05:01:07,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:01:07,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:01:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:01:07,271 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 05:01:07,557 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:11,043 INFO L93 Difference]: Finished difference Result 891 states and 1544 transitions. [2020-10-29 05:01:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:11,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-29 05:01:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:11,072 INFO L225 Difference]: With dead ends: 891 [2020-10-29 05:01:11,072 INFO L226 Difference]: Without dead ends: 483 [2020-10-29 05:01:11,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-29 05:01:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 477. [2020-10-29 05:01:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-29 05:01:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 725 transitions. [2020-10-29 05:01:11,187 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 725 transitions. Word has length 153 [2020-10-29 05:01:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:11,188 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 725 transitions. [2020-10-29 05:01:11,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:01:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 725 transitions. [2020-10-29 05:01:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 05:01:11,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:11,195 INFO L422 BasicCegarLoop]: trace histogram [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 05:01:11,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:01:11,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:11,196 INFO L82 PathProgramCache]: Analyzing trace with hash 770358157, now seen corresponding path program 1 times [2020-10-29 05:01:11,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:11,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284934694] [2020-10-29 05:01:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 05:01:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-29 05:01:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:13,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:01:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:01:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:01:14,189 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:01:14,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:14,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:14,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:01:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:01:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:14,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:01:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:01:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:14,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284934694] [2020-10-29 05:01:14,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:14,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:01:14,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070284640] [2020-10-29 05:01:14,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:01:14,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:14,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:01:14,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:14,523 INFO L87 Difference]: Start difference. First operand 477 states and 725 transitions. Second operand 6 states. [2020-10-29 05:01:14,877 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:15,361 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:20,016 INFO L93 Difference]: Finished difference Result 1792 states and 2785 transitions. [2020-10-29 05:01:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:01:20,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-10-29 05:01:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:20,028 INFO L225 Difference]: With dead ends: 1792 [2020-10-29 05:01:20,029 INFO L226 Difference]: Without dead ends: 1321 [2020-10-29 05:01:20,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-29 05:01:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1315. [2020-10-29 05:01:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-29 05:01:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1846 transitions. [2020-10-29 05:01:20,135 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1846 transitions. Word has length 165 [2020-10-29 05:01:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:20,136 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1846 transitions. [2020-10-29 05:01:20,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1846 transitions. [2020-10-29 05:01:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 05:01:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:20,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:20,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:01:20,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1932272769, now seen corresponding path program 1 times [2020-10-29 05:01:20,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:20,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784790101] [2020-10-29 05:01:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3341 [2020-10-29 05:01:23,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:23,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:01:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:01:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:23,996 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:01:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:24,165 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:24,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:01:24,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 05:01:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:24,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:01:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784790101] [2020-10-29 05:01:24,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:24,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:24,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816809269] [2020-10-29 05:01:24,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:24,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:24,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:24,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:24,374 INFO L87 Difference]: Start difference. First operand 1315 states and 1846 transitions. Second operand 5 states. [2020-10-29 05:01:24,717 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:27,860 INFO L93 Difference]: Finished difference Result 3889 states and 5568 transitions. [2020-10-29 05:01:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:27,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-29 05:01:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:27,882 INFO L225 Difference]: With dead ends: 3889 [2020-10-29 05:01:27,882 INFO L226 Difference]: Without dead ends: 2580 [2020-10-29 05:01:27,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-29 05:01:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2575. [2020-10-29 05:01:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-29 05:01:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3503 transitions. [2020-10-29 05:01:28,010 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3503 transitions. Word has length 180 [2020-10-29 05:01:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:28,012 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3503 transitions. [2020-10-29 05:01:28,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3503 transitions. [2020-10-29 05:01:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 05:01:28,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:28,039 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] [2020-10-29 05:01:28,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:01:28,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1618362240, now seen corresponding path program 1 times [2020-10-29 05:01:28,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:28,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503339785] [2020-10-29 05:01:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 05:01:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-29 05:01:28,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:28,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:01:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:29,149 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:29,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:01:29,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:29,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:29,344 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:29,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:29,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:29,577 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 05:01:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503339785] [2020-10-29 05:01:29,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:01:29,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 05:01:29,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200752335] [2020-10-29 05:01:29,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:29,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:29,586 INFO L87 Difference]: Start difference. First operand 2575 states and 3503 transitions. Second operand 7 states. [2020-10-29 05:01:29,843 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:01:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:33,683 INFO L93 Difference]: Finished difference Result 7793 states and 11095 transitions. [2020-10-29 05:01:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:01:33,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-29 05:01:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:33,728 INFO L225 Difference]: With dead ends: 7793 [2020-10-29 05:01:33,728 INFO L226 Difference]: Without dead ends: 5224 [2020-10-29 05:01:33,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-29 05:01:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5165. [2020-10-29 05:01:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5165 states. [2020-10-29 05:01:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 7158 transitions. [2020-10-29 05:01:33,983 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 7158 transitions. Word has length 187 [2020-10-29 05:01:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:33,983 INFO L481 AbstractCegarLoop]: Abstraction has 5165 states and 7158 transitions. [2020-10-29 05:01:33,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 7158 transitions. [2020-10-29 05:01:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 05:01:34,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:34,004 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:01:34,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:01:34,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash -601135861, now seen corresponding path program 1 times [2020-10-29 05:01:34,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:34,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013233339] [2020-10-29 05:01:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 05:01:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 05:01:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:39,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 05:01:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:01:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:39,434 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:01:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:39,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 05:01:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:39,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:01:39,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 05:01:39,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:39,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:01:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 05:01:39,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013233339] [2020-10-29 05:01:39,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:39,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:39,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413288887] [2020-10-29 05:01:39,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:39,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:39,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:39,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:39,874 INFO L87 Difference]: Start difference. First operand 5165 states and 7158 transitions. Second operand 5 states. [2020-10-29 05:01:40,245 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:43,898 INFO L93 Difference]: Finished difference Result 15418 states and 22028 transitions. [2020-10-29 05:01:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:43,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-29 05:01:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:43,964 INFO L225 Difference]: With dead ends: 15418 [2020-10-29 05:01:43,964 INFO L226 Difference]: Without dead ends: 10259 [2020-10-29 05:01:43,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10259 states. [2020-10-29 05:01:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10259 to 10223. [2020-10-29 05:01:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10223 states. [2020-10-29 05:01:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 14328 transitions. [2020-10-29 05:01:44,409 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 14328 transitions. Word has length 206 [2020-10-29 05:01:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:44,410 INFO L481 AbstractCegarLoop]: Abstraction has 10223 states and 14328 transitions. [2020-10-29 05:01:44,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 14328 transitions. [2020-10-29 05:01:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 05:01:44,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:44,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:01:44,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:01:44,446 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:44,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2036683715, now seen corresponding path program 1 times [2020-10-29 05:01:44,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:44,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236878099] [2020-10-29 05:01:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:46,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:01:46,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:01:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:46,963 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:46,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:46,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:46,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:01:46,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:46,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:46,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:46,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:47,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 05:01:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:47,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236878099] [2020-10-29 05:01:47,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:47,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:47,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193031708] [2020-10-29 05:01:47,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:47,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:47,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:47,266 INFO L87 Difference]: Start difference. First operand 10223 states and 14328 transitions. Second operand 5 states. [2020-10-29 05:01:47,613 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:51,397 INFO L93 Difference]: Finished difference Result 28649 states and 41235 transitions. [2020-10-29 05:01:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:51,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-29 05:01:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:51,514 INFO L225 Difference]: With dead ends: 28649 [2020-10-29 05:01:51,515 INFO L226 Difference]: Without dead ends: 18432 [2020-10-29 05:01:51,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18432 states. [2020-10-29 05:01:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18432 to 18413. [2020-10-29 05:01:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18413 states. [2020-10-29 05:01:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18413 states to 18413 states and 25866 transitions. [2020-10-29 05:01:52,217 INFO L78 Accepts]: Start accepts. Automaton has 18413 states and 25866 transitions. Word has length 220 [2020-10-29 05:01:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:52,218 INFO L481 AbstractCegarLoop]: Abstraction has 18413 states and 25866 transitions. [2020-10-29 05:01:52,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 18413 states and 25866 transitions. [2020-10-29 05:01:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 05:01:52,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:52,285 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, 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] [2020-10-29 05:01:52,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:01:52,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash -780241628, now seen corresponding path program 1 times [2020-10-29 05:01:52,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:52,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182330198] [2020-10-29 05:01:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:01:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:01:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:57,762 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:57,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:57,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 05:01:57,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:01:57,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:57,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:57,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 05:01:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:01:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 05:01:58,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182330198] [2020-10-29 05:01:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:58,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:58,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952678907] [2020-10-29 05:01:58,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:58,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:58,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:58,085 INFO L87 Difference]: Start difference. First operand 18413 states and 25866 transitions. Second operand 5 states. [2020-10-29 05:01:58,478 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:02,356 INFO L93 Difference]: Finished difference Result 49416 states and 70629 transitions. [2020-10-29 05:02:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:02,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-29 05:02:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:02,521 INFO L225 Difference]: With dead ends: 49416 [2020-10-29 05:02:02,522 INFO L226 Difference]: Without dead ends: 31009 [2020-10-29 05:02:02,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31009 states. [2020-10-29 05:02:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31009 to 30553. [2020-10-29 05:02:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30553 states. [2020-10-29 05:02:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30553 states to 30553 states and 43621 transitions. [2020-10-29 05:02:03,814 INFO L78 Accepts]: Start accepts. Automaton has 30553 states and 43621 transitions. Word has length 229 [2020-10-29 05:02:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:03,815 INFO L481 AbstractCegarLoop]: Abstraction has 30553 states and 43621 transitions. [2020-10-29 05:02:03,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30553 states and 43621 transitions. [2020-10-29 05:02:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 05:02:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:03,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:03,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:02:03,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1852717699, now seen corresponding path program 1 times [2020-10-29 05:02:03,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:03,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258756980] [2020-10-29 05:02:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 05:02:05,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:02:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:05,514 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:05,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:05,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:02:05,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:02:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:06,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258756980] [2020-10-29 05:02:06,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:02:06,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 05:02:06,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963511985] [2020-10-29 05:02:06,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:06,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:06,225 INFO L87 Difference]: Start difference. First operand 30553 states and 43621 transitions. Second operand 7 states. [2020-10-29 05:02:06,469 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:07,184 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:10,378 INFO L93 Difference]: Finished difference Result 61348 states and 89530 transitions. [2020-10-29 05:02:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:10,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-29 05:02:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:10,503 INFO L225 Difference]: With dead ends: 61348 [2020-10-29 05:02:10,503 INFO L226 Difference]: Without dead ends: 30801 [2020-10-29 05:02:10,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30801 states. [2020-10-29 05:02:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30801 to 30462. [2020-10-29 05:02:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30462 states. [2020-10-29 05:02:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30462 states to 30462 states and 39695 transitions. [2020-10-29 05:02:11,451 INFO L78 Accepts]: Start accepts. Automaton has 30462 states and 39695 transitions. Word has length 233 [2020-10-29 05:02:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:11,452 INFO L481 AbstractCegarLoop]: Abstraction has 30462 states and 39695 transitions. [2020-10-29 05:02:11,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 30462 states and 39695 transitions. [2020-10-29 05:02:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 05:02:11,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:11,740 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:11,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:02:11,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:11,742 INFO L82 PathProgramCache]: Analyzing trace with hash 539426225, now seen corresponding path program 1 times [2020-10-29 05:02:11,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:11,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025277679] [2020-10-29 05:02:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:12,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 05:02:16,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:02:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 05:02:16,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,196 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:17,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:02:17,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:02:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:02:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:02:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 05:02:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:02:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 05:02:17,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:02:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 05:02:17,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025277679] [2020-10-29 05:02:17,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:17,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:17,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482883485] [2020-10-29 05:02:17,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:17,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:17,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:17,917 INFO L87 Difference]: Start difference. First operand 30462 states and 39695 transitions. Second operand 7 states. [2020-10-29 05:02:18,313 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:02:18,921 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:02:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:24,960 INFO L93 Difference]: Finished difference Result 75287 states and 106258 transitions. [2020-10-29 05:02:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:24,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-29 05:02:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:25,184 INFO L225 Difference]: With dead ends: 75287 [2020-10-29 05:02:25,184 INFO L226 Difference]: Without dead ends: 44831 [2020-10-29 05:02:25,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44831 states. [2020-10-29 05:02:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44831 to 41533. [2020-10-29 05:02:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41533 states. [2020-10-29 05:02:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41533 states to 41533 states and 54417 transitions. [2020-10-29 05:02:27,369 INFO L78 Accepts]: Start accepts. Automaton has 41533 states and 54417 transitions. Word has length 279 [2020-10-29 05:02:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:27,370 INFO L481 AbstractCegarLoop]: Abstraction has 41533 states and 54417 transitions. [2020-10-29 05:02:27,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 41533 states and 54417 transitions. [2020-10-29 05:02:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 05:02:27,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:27,459 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:27,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:02:27,459 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:27,460 INFO L82 PathProgramCache]: Analyzing trace with hash 871709286, now seen corresponding path program 1 times [2020-10-29 05:02:27,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:27,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954706184] [2020-10-29 05:02:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:32,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 05:02:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 05:02:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:32,845 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:32,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:02:33,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:02:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:33,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:02:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:33,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:33,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:02:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 05:02:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:02:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 05:02:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:02:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 05:02:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:33,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 270 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-29 05:02:33,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954706184] [2020-10-29 05:02:33,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:33,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:33,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435353983] [2020-10-29 05:02:33,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:33,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:33,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:33,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:33,717 INFO L87 Difference]: Start difference. First operand 41533 states and 54417 transitions. Second operand 7 states. [2020-10-29 05:02:33,996 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:02:34,638 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:38,000 INFO L93 Difference]: Finished difference Result 81976 states and 110409 transitions. [2020-10-29 05:02:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:38,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-29 05:02:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:38,170 INFO L225 Difference]: With dead ends: 81976 [2020-10-29 05:02:38,170 INFO L226 Difference]: Without dead ends: 41498 [2020-10-29 05:02:38,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:02:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41498 states. [2020-10-29 05:02:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41498 to 41123. [2020-10-29 05:02:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41123 states. [2020-10-29 05:02:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41123 states to 41123 states and 51434 transitions. [2020-10-29 05:02:39,658 INFO L78 Accepts]: Start accepts. Automaton has 41123 states and 51434 transitions. Word has length 300 [2020-10-29 05:02:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:39,659 INFO L481 AbstractCegarLoop]: Abstraction has 41123 states and 51434 transitions. [2020-10-29 05:02:39,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 41123 states and 51434 transitions. [2020-10-29 05:02:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 05:02:39,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:39,781 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:02:39,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:02:39,782 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1814373809, now seen corresponding path program 1 times [2020-10-29 05:02:39,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:39,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26413156] [2020-10-29 05:02:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:44,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:02:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 05:02:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,139 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:02:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 05:02:45,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:02:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 05:02:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 05:02:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:02:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 226 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 05:02:46,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26413156] [2020-10-29 05:02:46,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:46,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:46,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416698824] [2020-10-29 05:02:46,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:46,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:46,020 INFO L87 Difference]: Start difference. First operand 41123 states and 51434 transitions. Second operand 8 states. [2020-10-29 05:02:46,472 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:46,962 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:53,506 INFO L93 Difference]: Finished difference Result 147247 states and 196286 transitions. [2020-10-29 05:02:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:02:53,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-10-29 05:02:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:54,231 INFO L225 Difference]: With dead ends: 147247 [2020-10-29 05:02:54,231 INFO L226 Difference]: Without dead ends: 107179 [2020-10-29 05:02:54,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:02:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107179 states. [2020-10-29 05:02:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107179 to 105682. [2020-10-29 05:02:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105682 states. [2020-10-29 05:02:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105682 states to 105682 states and 141840 transitions. [2020-10-29 05:02:58,129 INFO L78 Accepts]: Start accepts. Automaton has 105682 states and 141840 transitions. Word has length 303 [2020-10-29 05:02:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:58,129 INFO L481 AbstractCegarLoop]: Abstraction has 105682 states and 141840 transitions. [2020-10-29 05:02:58,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 105682 states and 141840 transitions. [2020-10-29 05:02:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 05:02:58,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:58,364 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:58,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:02:58,365 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1462046736, now seen corresponding path program 1 times [2020-10-29 05:02:58,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:58,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64668693] [2020-10-29 05:02:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:03,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:03,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 05:03:03,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:03:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:03:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:03,711 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:03,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:03,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:03:03,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:03:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:03:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:03,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:03:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 05:03:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 05:03:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 05:03:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 167 proven. 66 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-29 05:03:04,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64668693] [2020-10-29 05:03:04,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:04,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:04,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718735480] [2020-10-29 05:03:04,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:04,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:04,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:04,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:04,267 INFO L87 Difference]: Start difference. First operand 105682 states and 141840 transitions. Second operand 7 states. [2020-10-29 05:03:04,544 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:08,024 INFO L93 Difference]: Finished difference Result 187170 states and 252314 transitions. [2020-10-29 05:03:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 05:03:08,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-29 05:03:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:08,491 INFO L225 Difference]: With dead ends: 187170 [2020-10-29 05:03:08,491 INFO L226 Difference]: Without dead ends: 82334 [2020-10-29 05:03:08,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:03:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82334 states. [2020-10-29 05:03:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82334 to 82113. [2020-10-29 05:03:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82113 states. [2020-10-29 05:03:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82113 states to 82113 states and 105844 transitions. [2020-10-29 05:03:11,022 INFO L78 Accepts]: Start accepts. Automaton has 82113 states and 105844 transitions. Word has length 315 [2020-10-29 05:03:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:11,023 INFO L481 AbstractCegarLoop]: Abstraction has 82113 states and 105844 transitions. [2020-10-29 05:03:11,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 82113 states and 105844 transitions. [2020-10-29 05:03:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 05:03:11,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:11,451 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 05:03:11,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:03:11,451 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1035928863, now seen corresponding path program 1 times [2020-10-29 05:03:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682958525] [2020-10-29 05:03:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:16,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 05:03:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:03:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 05:03:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:16,877 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:16,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:03:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:03:17,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 05:03:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:03:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:03:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 05:03:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 05:03:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:17,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:03:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 05:03:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:17,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:03:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 268 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:03:18,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682958525] [2020-10-29 05:03:18,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:18,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:03:18,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391512443] [2020-10-29 05:03:18,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 05:03:18,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 05:03:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:03:18,254 INFO L87 Difference]: Start difference. First operand 82113 states and 105844 transitions. Second operand 11 states. [2020-10-29 05:03:18,531 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:19,205 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-29 05:03:19,446 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:26,413 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:03:27,094 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-29 05:03:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:33,122 INFO L93 Difference]: Finished difference Result 206652 states and 314100 transitions. [2020-10-29 05:03:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 05:03:33,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 343 [2020-10-29 05:03:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:34,077 INFO L225 Difference]: With dead ends: 206652 [2020-10-29 05:03:34,077 INFO L226 Difference]: Without dead ends: 125635 [2020-10-29 05:03:34,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2020-10-29 05:03:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125635 states. [2020-10-29 05:03:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125635 to 109227. [2020-10-29 05:03:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109227 states. [2020-10-29 05:03:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109227 states to 109227 states and 138274 transitions. [2020-10-29 05:03:39,088 INFO L78 Accepts]: Start accepts. Automaton has 109227 states and 138274 transitions. Word has length 343 [2020-10-29 05:03:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:39,089 INFO L481 AbstractCegarLoop]: Abstraction has 109227 states and 138274 transitions. [2020-10-29 05:03:39,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 05:03:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 109227 states and 138274 transitions. [2020-10-29 05:03:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-29 05:03:39,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:39,195 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:03:39,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:03:39,196 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:39,196 INFO L82 PathProgramCache]: Analyzing trace with hash -722429772, now seen corresponding path program 1 times [2020-10-29 05:03:39,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:39,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484118017] [2020-10-29 05:03:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 05:03:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:44,628 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:44,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:03:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:03:44,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:03:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 05:03:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 05:03:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 05:03:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:45,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:03:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 05:03:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 05:03:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:03:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 316 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 05:03:45,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484118017] [2020-10-29 05:03:45,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:45,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:03:45,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075581786] [2020-10-29 05:03:45,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 05:03:45,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:45,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 05:03:45,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:03:45,791 INFO L87 Difference]: Start difference. First operand 109227 states and 138274 transitions. Second operand 10 states. [2020-10-29 05:03:46,384 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-29 05:03:47,101 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2020-10-29 05:03:48,140 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:49,537 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 05:03:52,171 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-29 05:03:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:57,707 INFO L93 Difference]: Finished difference Result 246907 states and 312767 transitions. [2020-10-29 05:03:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 05:03:57,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 356 [2020-10-29 05:03:57,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:58,635 INFO L225 Difference]: With dead ends: 246907 [2020-10-29 05:03:58,635 INFO L226 Difference]: Without dead ends: 139434 [2020-10-29 05:03:58,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2020-10-29 05:03:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139434 states. [2020-10-29 05:04:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139434 to 138407. [2020-10-29 05:04:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138407 states. [2020-10-29 05:04:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138407 states to 138407 states and 173479 transitions. [2020-10-29 05:04:02,662 INFO L78 Accepts]: Start accepts. Automaton has 138407 states and 173479 transitions. Word has length 356 [2020-10-29 05:04:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:02,662 INFO L481 AbstractCegarLoop]: Abstraction has 138407 states and 173479 transitions. [2020-10-29 05:04:02,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 05:04:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 138407 states and 173479 transitions. [2020-10-29 05:04:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 05:04:02,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:02,808 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 05:04:02,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:04:02,808 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash 503131032, now seen corresponding path program 1 times [2020-10-29 05:04:02,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:02,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322918111] [2020-10-29 05:04:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 05:04:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:08,144 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:04:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:08,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:08,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:08,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:08,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:04:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:08,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:04:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:08,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 05:04:08,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 05:04:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:08,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:08,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 05:04:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 05:04:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:08,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 05:04:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 05:04:08,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322918111] [2020-10-29 05:04:08,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:08,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:04:08,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977969790] [2020-10-29 05:04:08,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:04:08,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:08,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:04:08,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:04:08,834 INFO L87 Difference]: Start difference. First operand 138407 states and 173479 transitions. Second operand 7 states. [2020-10-29 05:04:09,088 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:04:11,050 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159