/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:55:27,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:55:27,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:55:27,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:55:27,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:55:27,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:55:27,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:55:27,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:55:27,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:55:27,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:55:27,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:55:27,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:55:27,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:55:27,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:55:27,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:55:27,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:55:27,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:55:27,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:55:27,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:55:27,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:55:27,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:55:27,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:55:27,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:55:27,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:55:27,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:55:27,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:55:27,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:55:27,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:55:27,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:55:27,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:55:27,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:55:27,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:55:27,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:55:27,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:55:27,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:55:27,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:55:27,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:55:27,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:55:27,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:55:27,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:55:27,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:55:27,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:55:27,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:55:27,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:55:27,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:55:27,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:55:27,583 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:55:27,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:55:27,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:55:27,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:55:27,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:55:27,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:55:27,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:55:27,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:55:27,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:55:27,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:55:27,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:55:27,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:55:27,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:55:27,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:55:27,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:55:27,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:55:27,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:55:27,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:27,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:55:27,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:55:27,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:55:27,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:55:27,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:55:27,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:55:27,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:55:27,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:55:28,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:55:28,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:55:28,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:55:28,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:55:28,052 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:55:28,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-29 04:55:28,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8be43f51/41b01d9b7de04724ba0fa1e0a1d464fc/FLAG112e74298 [2020-10-29 04:55:29,046 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:55:29,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-29 04:55:29,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8be43f51/41b01d9b7de04724ba0fa1e0a1d464fc/FLAG112e74298 [2020-10-29 04:55:29,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8be43f51/41b01d9b7de04724ba0fa1e0a1d464fc [2020-10-29 04:55:29,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:55:29,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:55:29,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:29,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:55:29,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:55:29,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:29" (1/1) ... [2020-10-29 04:55:29,198 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 04:55:29, skipping insertion in model container [2020-10-29 04:55:29,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:29" (1/1) ... [2020-10-29 04:55:29,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:55:29,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:55:30,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:30,054 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:55:30,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:30,387 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:55:30,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30 WrapperNode [2020-10-29 04:55:30,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:30,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:55:30,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:55:30,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:55:30,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... [2020-10-29 04:55:30,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:55:30,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:55:30,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:55:30,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:55:30,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:55:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:55:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:55:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:55:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:55:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:55:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:55:32,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:55:32,996 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:55:32,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:32 BoogieIcfgContainer [2020-10-29 04:55:32,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:55:33,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:55:33,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:55:33,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:55:33,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:29" (1/3) ... [2020-10-29 04:55:33,005 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 04:55:33, skipping insertion in model container [2020-10-29 04:55:33,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:30" (2/3) ... [2020-10-29 04:55:33,006 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 04:55:33, skipping insertion in model container [2020-10-29 04:55:33,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:32" (3/3) ... [2020-10-29 04:55:33,007 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2020-10-29 04:55:33,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:55:33,025 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:55:33,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:55:33,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:55:33,068 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:55:33,068 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:55:33,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:55:33,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:55:33,069 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:55:33,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:55:33,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:55:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:55:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 04:55:33,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:33,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:33,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:33,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1540663388, now seen corresponding path program 1 times [2020-10-29 04:55:33,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:33,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128491617] [2020-10-29 04:55:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 04:55:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4218 [2020-10-29 04:55:37,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:37,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 04:55:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:38,308 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:38,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:38,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:38,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:55:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:38,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:38,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128491617] [2020-10-29 04:55:38,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:38,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:55:38,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413675593] [2020-10-29 04:55:38,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:55:38,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:38,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:55:38,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:55:38,474 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:55:38,738 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:42,037 INFO L93 Difference]: Finished difference Result 844 states and 1491 transitions. [2020-10-29 04:55:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:42,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-29 04:55:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:42,057 INFO L225 Difference]: With dead ends: 844 [2020-10-29 04:55:42,057 INFO L226 Difference]: Without dead ends: 465 [2020-10-29 04:55:42,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-29 04:55:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 461. [2020-10-29 04:55:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-29 04:55:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 652 transitions. [2020-10-29 04:55:42,160 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 652 transitions. Word has length 159 [2020-10-29 04:55:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:42,162 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 652 transitions. [2020-10-29 04:55:42,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:55:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 652 transitions. [2020-10-29 04:55:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 04:55:42,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:42,177 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, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:42,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:55:42,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:42,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1599323803, now seen corresponding path program 1 times [2020-10-29 04:55:42,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:42,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444256127] [2020-10-29 04:55:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:44,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 04:55:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2395 [2020-10-29 04:55:44,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:55:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 04:55:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:45,001 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:45,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:45,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:55:45,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 04:55:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:55:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:55:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:45,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:55:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:45,222 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 04:55:45,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444256127] [2020-10-29 04:55:45,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:45,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776636819] [2020-10-29 04:55:45,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:45,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:45,233 INFO L87 Difference]: Start difference. First operand 461 states and 652 transitions. Second operand 5 states. [2020-10-29 04:55:45,548 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:48,581 INFO L93 Difference]: Finished difference Result 1352 states and 1930 transitions. [2020-10-29 04:55:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:48,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-29 04:55:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:48,600 INFO L225 Difference]: With dead ends: 1352 [2020-10-29 04:55:48,600 INFO L226 Difference]: Without dead ends: 897 [2020-10-29 04:55:48,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-29 04:55:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 892. [2020-10-29 04:55:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-29 04:55:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1188 transitions. [2020-10-29 04:55:48,709 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1188 transitions. Word has length 171 [2020-10-29 04:55:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:48,711 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1188 transitions. [2020-10-29 04:55:48,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1188 transitions. [2020-10-29 04:55:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 04:55:48,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:48,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:48,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:48,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash 278400635, now seen corresponding path program 1 times [2020-10-29 04:55:48,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:48,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082844963] [2020-10-29 04:55:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:53,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:55:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 04:55:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:54,096 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:54,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:54,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:54,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:54,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:54,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:55:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:55:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:54,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:55:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:54,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:55:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:54,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:55:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:55:54,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082844963] [2020-10-29 04:55:54,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:54,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:54,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831304346] [2020-10-29 04:55:54,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:54,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:54,367 INFO L87 Difference]: Start difference. First operand 892 states and 1188 transitions. Second operand 5 states. [2020-10-29 04:55:54,727 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:57,873 INFO L93 Difference]: Finished difference Result 2204 states and 3045 transitions. [2020-10-29 04:55:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:57,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-29 04:55:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:57,884 INFO L225 Difference]: With dead ends: 2204 [2020-10-29 04:55:57,884 INFO L226 Difference]: Without dead ends: 1318 [2020-10-29 04:55:57,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-29 04:55:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1311. [2020-10-29 04:55:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-29 04:55:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1791 transitions. [2020-10-29 04:55:57,945 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1791 transitions. Word has length 181 [2020-10-29 04:55:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:57,945 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1791 transitions. [2020-10-29 04:55:57,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1791 transitions. [2020-10-29 04:55:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 04:55:57,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:57,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:57,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:57,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2061072854, now seen corresponding path program 1 times [2020-10-29 04:55:57,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:57,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172362092] [2020-10-29 04:55:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 04:56:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-29 04:56:03,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:56:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 04:56:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:03,553 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:56:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:56:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172362092] [2020-10-29 04:56:03,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:03,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:03,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127977741] [2020-10-29 04:56:03,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:03,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:03,844 INFO L87 Difference]: Start difference. First operand 1311 states and 1791 transitions. Second operand 5 states. [2020-10-29 04:56:04,176 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:07,294 INFO L93 Difference]: Finished difference Result 3894 states and 5421 transitions. [2020-10-29 04:56:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:07,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-29 04:56:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:07,314 INFO L225 Difference]: With dead ends: 3894 [2020-10-29 04:56:07,314 INFO L226 Difference]: Without dead ends: 2589 [2020-10-29 04:56:07,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2020-10-29 04:56:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2569. [2020-10-29 04:56:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2569 states. [2020-10-29 04:56:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3507 transitions. [2020-10-29 04:56:07,420 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3507 transitions. Word has length 185 [2020-10-29 04:56:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:07,421 INFO L481 AbstractCegarLoop]: Abstraction has 2569 states and 3507 transitions. [2020-10-29 04:56:07,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3507 transitions. [2020-10-29 04:56:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 04:56:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:07,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 04:56:07,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:56:07,432 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1555874659, now seen corresponding path program 1 times [2020-10-29 04:56:07,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:07,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759072329] [2020-10-29 04:56:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:12,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 04:56:12,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:56:12,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:12,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:56:12,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:56:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:12,729 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:12,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:12,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:12,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:12,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:56:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:56:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:12,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:56:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:56:12,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:56:13,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759072329] [2020-10-29 04:56:13,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:13,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:13,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789148485] [2020-10-29 04:56:13,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:13,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:13,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:13,067 INFO L87 Difference]: Start difference. First operand 2569 states and 3507 transitions. Second operand 7 states. [2020-10-29 04:56:13,296 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:15,381 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:16,993 INFO L93 Difference]: Finished difference Result 7778 states and 11168 transitions. [2020-10-29 04:56:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:16,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-29 04:56:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:17,037 INFO L225 Difference]: With dead ends: 7778 [2020-10-29 04:56:17,037 INFO L226 Difference]: Without dead ends: 5215 [2020-10-29 04:56:17,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2020-10-29 04:56:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5156. [2020-10-29 04:56:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-29 04:56:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7042 transitions. [2020-10-29 04:56:17,271 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7042 transitions. Word has length 202 [2020-10-29 04:56:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:17,271 INFO L481 AbstractCegarLoop]: Abstraction has 5156 states and 7042 transitions. [2020-10-29 04:56:17,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7042 transitions. [2020-10-29 04:56:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 04:56:17,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:17,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:17,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:56:17,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:17,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:17,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1742597809, now seen corresponding path program 1 times [2020-10-29 04:56:17,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:17,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534333806] [2020-10-29 04:56:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:18,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 04:56:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:56:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:18,715 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:18,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:18,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:18,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:18,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:18,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:56:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:56:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:56:19,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534333806] [2020-10-29 04:56:19,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:56:19,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:56:19,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012896876] [2020-10-29 04:56:19,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:19,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:19,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:19,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:19,195 INFO L87 Difference]: Start difference. First operand 5156 states and 7042 transitions. Second operand 7 states. [2020-10-29 04:56:19,420 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:56:22,587 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:23,333 INFO L93 Difference]: Finished difference Result 15512 states and 21662 transitions. [2020-10-29 04:56:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:56:23,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-29 04:56:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:23,397 INFO L225 Difference]: With dead ends: 15512 [2020-10-29 04:56:23,397 INFO L226 Difference]: Without dead ends: 10362 [2020-10-29 04:56:23,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:56:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2020-10-29 04:56:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 10331. [2020-10-29 04:56:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10331 states. [2020-10-29 04:56:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 14345 transitions. [2020-10-29 04:56:23,773 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 14345 transitions. Word has length 217 [2020-10-29 04:56:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:23,773 INFO L481 AbstractCegarLoop]: Abstraction has 10331 states and 14345 transitions. [2020-10-29 04:56:23,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 14345 transitions. [2020-10-29 04:56:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 04:56:23,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:23,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:23,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:56:23,807 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1914497856, now seen corresponding path program 1 times [2020-10-29 04:56:23,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:23,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102402572] [2020-10-29 04:56:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 04:56:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 04:56:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,177 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:29,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:29,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:56:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:29,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:56:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:29,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:56:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:29,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:56:29,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:29,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:56:29,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 04:56:29,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102402572] [2020-10-29 04:56:29,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:29,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714719929] [2020-10-29 04:56:29,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:29,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:29,636 INFO L87 Difference]: Start difference. First operand 10331 states and 14345 transitions. Second operand 5 states. [2020-10-29 04:56:29,963 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:33,456 INFO L93 Difference]: Finished difference Result 24697 states and 35042 transitions. [2020-10-29 04:56:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:33,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-29 04:56:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:33,531 INFO L225 Difference]: With dead ends: 24697 [2020-10-29 04:56:33,531 INFO L226 Difference]: Without dead ends: 14372 [2020-10-29 04:56:33,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2020-10-29 04:56:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 14330. [2020-10-29 04:56:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14330 states. [2020-10-29 04:56:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 20262 transitions. [2020-10-29 04:56:34,085 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 20262 transitions. Word has length 219 [2020-10-29 04:56:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:34,086 INFO L481 AbstractCegarLoop]: Abstraction has 14330 states and 20262 transitions. [2020-10-29 04:56:34,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 20262 transitions. [2020-10-29 04:56:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 04:56:34,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:34,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:34,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:56:34,135 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:34,136 INFO L82 PathProgramCache]: Analyzing trace with hash -709455760, now seen corresponding path program 1 times [2020-10-29 04:56:34,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:34,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884710116] [2020-10-29 04:56:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3501 [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:37,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:56:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:56:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:37,922 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:37,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:38,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:56:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:56:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:56:38,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884710116] [2020-10-29 04:56:38,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:38,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:38,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174115584] [2020-10-29 04:56:38,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:38,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:38,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:38,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:38,660 INFO L87 Difference]: Start difference. First operand 14330 states and 20262 transitions. Second operand 8 states. [2020-10-29 04:56:38,845 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:39,965 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:56:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:42,948 INFO L93 Difference]: Finished difference Result 39030 states and 58403 transitions. [2020-10-29 04:56:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:42,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2020-10-29 04:56:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:43,077 INFO L225 Difference]: With dead ends: 39030 [2020-10-29 04:56:43,077 INFO L226 Difference]: Without dead ends: 24706 [2020-10-29 04:56:43,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24706 states. [2020-10-29 04:56:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24706 to 24417. [2020-10-29 04:56:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24417 states. [2020-10-29 04:56:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24417 states to 24417 states and 35120 transitions. [2020-10-29 04:56:43,946 INFO L78 Accepts]: Start accepts. Automaton has 24417 states and 35120 transitions. Word has length 229 [2020-10-29 04:56:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:43,947 INFO L481 AbstractCegarLoop]: Abstraction has 24417 states and 35120 transitions. [2020-10-29 04:56:43,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 24417 states and 35120 transitions. [2020-10-29 04:56:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 04:56:44,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:44,029 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:44,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:44,029 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2021785432, now seen corresponding path program 1 times [2020-10-29 04:56:44,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:44,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91547803] [2020-10-29 04:56:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:47,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3672 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:56:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:47,958 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:48,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:56:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:56:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:48,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:48,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:48,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:56:48,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 04:56:48,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:48,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:56:48,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:56:48,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91547803] [2020-10-29 04:56:48,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:48,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:48,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952014115] [2020-10-29 04:56:48,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:48,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:48,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:48,468 INFO L87 Difference]: Start difference. First operand 24417 states and 35120 transitions. Second operand 8 states. [2020-10-29 04:56:48,672 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:49,060 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:49,609 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:53,871 INFO L93 Difference]: Finished difference Result 80221 states and 119513 transitions. [2020-10-29 04:56:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:56:53,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2020-10-29 04:56:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:54,128 INFO L225 Difference]: With dead ends: 80221 [2020-10-29 04:56:54,128 INFO L226 Difference]: Without dead ends: 55810 [2020-10-29 04:56:54,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:56:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55810 states. [2020-10-29 04:56:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55810 to 54801. [2020-10-29 04:56:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54801 states. [2020-10-29 04:56:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54801 states to 54801 states and 75993 transitions. [2020-10-29 04:56:56,504 INFO L78 Accepts]: Start accepts. Automaton has 54801 states and 75993 transitions. Word has length 233 [2020-10-29 04:56:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:56,505 INFO L481 AbstractCegarLoop]: Abstraction has 54801 states and 75993 transitions. [2020-10-29 04:56:56,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 54801 states and 75993 transitions. [2020-10-29 04:56:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 04:56:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:56,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:56:56,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:56:56,618 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1927015568, now seen corresponding path program 1 times [2020-10-29 04:56:56,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:56,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449839960] [2020-10-29 04:56:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 04:57:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 04:57:01,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:01,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 04:57:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 04:57:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,163 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:57:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:57:02,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:57:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:57:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:57:02,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449839960] [2020-10-29 04:57:02,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:02,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:57:02,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172853790] [2020-10-29 04:57:02,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:57:02,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:02,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:57:02,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:57:02,626 INFO L87 Difference]: Start difference. First operand 54801 states and 75993 transitions. Second operand 6 states. [2020-10-29 04:57:02,974 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:06,797 INFO L93 Difference]: Finished difference Result 128346 states and 183047 transitions. [2020-10-29 04:57:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:57:06,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2020-10-29 04:57:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:07,184 INFO L225 Difference]: With dead ends: 128346 [2020-10-29 04:57:07,185 INFO L226 Difference]: Without dead ends: 73758 [2020-10-29 04:57:07,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73758 states. [2020-10-29 04:57:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73758 to 73387. [2020-10-29 04:57:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73387 states. [2020-10-29 04:57:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73387 states to 73387 states and 100341 transitions. [2020-10-29 04:57:10,416 INFO L78 Accepts]: Start accepts. Automaton has 73387 states and 100341 transitions. Word has length 234 [2020-10-29 04:57:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:10,416 INFO L481 AbstractCegarLoop]: Abstraction has 73387 states and 100341 transitions. [2020-10-29 04:57:10,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:57:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 73387 states and 100341 transitions. [2020-10-29 04:57:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 04:57:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:10,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:57:10,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:57:10,538 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash 82352547, now seen corresponding path program 1 times [2020-10-29 04:57:10,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:10,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343699557] [2020-10-29 04:57:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4671 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 04:57:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:15,525 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:15,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:15,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:57:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:57:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:15,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:15,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:57:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:57:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:57:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:15,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:57:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:57:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 74 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:57:16,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343699557] [2020-10-29 04:57:16,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:16,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:16,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403721708] [2020-10-29 04:57:16,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:57:16,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:57:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:16,122 INFO L87 Difference]: Start difference. First operand 73387 states and 100341 transitions. Second operand 8 states. [2020-10-29 04:57:16,333 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:57:16,757 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:20,801 INFO L93 Difference]: Finished difference Result 180198 states and 252837 transitions. [2020-10-29 04:57:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:57:20,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-29 04:57:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:21,798 INFO L225 Difference]: With dead ends: 180198 [2020-10-29 04:57:21,798 INFO L226 Difference]: Without dead ends: 107024 [2020-10-29 04:57:21,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:57:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107024 states. [2020-10-29 04:57:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107024 to 106529. [2020-10-29 04:57:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106529 states. [2020-10-29 04:57:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106529 states to 106529 states and 144537 transitions. [2020-10-29 04:57:25,549 INFO L78 Accepts]: Start accepts. Automaton has 106529 states and 144537 transitions. Word has length 240 [2020-10-29 04:57:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:25,550 INFO L481 AbstractCegarLoop]: Abstraction has 106529 states and 144537 transitions. [2020-10-29 04:57:25,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:57:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 106529 states and 144537 transitions. [2020-10-29 04:57:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 04:57:25,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:25,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:57:25,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:57:25,664 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:25,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2094924052, now seen corresponding path program 1 times [2020-10-29 04:57:25,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:25,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510940263] [2020-10-29 04:57:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:30,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:30,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 04:57:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 04:57:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:31,025 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:31,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:31,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:57:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:31,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:57:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:57:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:57:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:31,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:57:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:57:31,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510940263] [2020-10-29 04:57:31,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:31,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:57:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617809470] [2020-10-29 04:57:31,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:57:31,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:31,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:57:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:57:31,672 INFO L87 Difference]: Start difference. First operand 106529 states and 144537 transitions. Second operand 11 states. [2020-10-29 04:57:31,873 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:32,450 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 161 [2020-10-29 04:57:33,352 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:33,793 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-29 04:57:36,048 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-29 04:57:37,203 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:57:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:41,306 INFO L93 Difference]: Finished difference Result 228807 states and 313799 transitions. [2020-10-29 04:57:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:57:41,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-10-29 04:57:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:42,003 INFO L225 Difference]: With dead ends: 228807 [2020-10-29 04:57:42,003 INFO L226 Difference]: Without dead ends: 122491 [2020-10-29 04:57:42,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:57:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122491 states. [2020-10-29 04:57:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122491 to 120124. [2020-10-29 04:57:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120124 states. [2020-10-29 04:57:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120124 states to 120124 states and 158258 transitions. [2020-10-29 04:57:45,843 INFO L78 Accepts]: Start accepts. Automaton has 120124 states and 158258 transitions. Word has length 248 [2020-10-29 04:57:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:45,844 INFO L481 AbstractCegarLoop]: Abstraction has 120124 states and 158258 transitions. [2020-10-29 04:57:45,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:57:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 120124 states and 158258 transitions. [2020-10-29 04:57:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 04:57:45,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:45,943 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:45,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:45,944 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:45,944 INFO L82 PathProgramCache]: Analyzing trace with hash 79872172, now seen corresponding path program 1 times [2020-10-29 04:57:45,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:45,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355533462] [2020-10-29 04:57:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:57:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,316 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:57:51,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:57:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:57:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:57:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:57:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:57:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:57:51,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 04:57:51,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355533462] [2020-10-29 04:57:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:51,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123562144] [2020-10-29 04:57:51,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:51,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:51,759 INFO L87 Difference]: Start difference. First operand 120124 states and 158258 transitions. Second operand 7 states. [2020-10-29 04:57:52,025 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:54,299 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:56,650 INFO L93 Difference]: Finished difference Result 235815 states and 315052 transitions. [2020-10-29 04:57:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:56,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-29 04:57:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:57,340 INFO L225 Difference]: With dead ends: 235815 [2020-10-29 04:57:57,340 INFO L226 Difference]: Without dead ends: 116740 [2020-10-29 04:57:57,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116740 states. [2020-10-29 04:57:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116740 to 115289. [2020-10-29 04:57:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115289 states. [2020-10-29 04:58:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115289 states to 115289 states and 146671 transitions. [2020-10-29 04:58:00,261 INFO L78 Accepts]: Start accepts. Automaton has 115289 states and 146671 transitions. Word has length 297 [2020-10-29 04:58:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:00,262 INFO L481 AbstractCegarLoop]: Abstraction has 115289 states and 146671 transitions. [2020-10-29 04:58:00,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:58:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 115289 states and 146671 transitions. [2020-10-29 04:58:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-29 04:58:00,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:00,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:58:00,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:58:00,777 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash 768902851, now seen corresponding path program 1 times [2020-10-29 04:58:00,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:00,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435526324] [2020-10-29 04:58:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2378 [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:58:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 04:58:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:03,428 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:03,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:03,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:58:03,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:58:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:58:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:03,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:58:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:58:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:04,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 04:58:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 160 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:58:04,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435526324] [2020-10-29 04:58:04,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:04,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:58:04,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700613156] [2020-10-29 04:58:04,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:04,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:04,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:04,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:04,222 INFO L87 Difference]: Start difference. First operand 115289 states and 146671 transitions. Second operand 8 states. [2020-10-29 04:58:04,445 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:07,336 INFO L93 Difference]: Finished difference Result 207458 states and 265042 transitions. [2020-10-29 04:58:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:07,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 299 [2020-10-29 04:58:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:07,625 INFO L225 Difference]: With dead ends: 207458 [2020-10-29 04:58:07,625 INFO L226 Difference]: Without dead ends: 93011 [2020-10-29 04:58:07,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:58:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93011 states. [2020-10-29 04:58:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93011 to 90359. [2020-10-29 04:58:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90359 states. [2020-10-29 04:58:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90359 states to 90359 states and 114521 transitions. [2020-10-29 04:58:09,776 INFO L78 Accepts]: Start accepts. Automaton has 90359 states and 114521 transitions. Word has length 299 [2020-10-29 04:58:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:09,776 INFO L481 AbstractCegarLoop]: Abstraction has 90359 states and 114521 transitions. [2020-10-29 04:58:09,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:58:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 90359 states and 114521 transitions. [2020-10-29 04:58:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 04:58:10,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:10,168 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:10,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:58:10,168 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -631664643, now seen corresponding path program 1 times [2020-10-29 04:58:10,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:10,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783309555] [2020-10-29 04:58:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-29 04:58:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:58:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:15,520 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:58:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:58:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:58:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:58:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 04:58:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:15,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:15,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 145 proven. 63 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 04:58:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783309555] [2020-10-29 04:58:16,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:16,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:58:16,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447656576] [2020-10-29 04:58:16,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:58:16,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:58:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:58:16,109 INFO L87 Difference]: Start difference. First operand 90359 states and 114521 transitions. Second operand 7 states. [2020-10-29 04:58:16,322 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:58:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:19,703 INFO L93 Difference]: Finished difference Result 198105 states and 252132 transitions. [2020-10-29 04:58:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:58:19,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-29 04:58:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:20,002 INFO L225 Difference]: With dead ends: 198105 [2020-10-29 04:58:20,002 INFO L226 Difference]: Without dead ends: 109428 [2020-10-29 04:58:20,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109428 states. [2020-10-29 04:58:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109428 to 107935. [2020-10-29 04:58:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107935 states. [2020-10-29 04:58:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107935 states to 107935 states and 137554 transitions. [2020-10-29 04:58:22,838 INFO L78 Accepts]: Start accepts. Automaton has 107935 states and 137554 transitions. Word has length 318 [2020-10-29 04:58:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:22,838 INFO L481 AbstractCegarLoop]: Abstraction has 107935 states and 137554 transitions. [2020-10-29 04:58:22,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:58:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 107935 states and 137554 transitions. [2020-10-29 04:58:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-29 04:58:22,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:22,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:22,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:58:22,925 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:22,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1908722853, now seen corresponding path program 1 times [2020-10-29 04:58:22,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:22,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287609213] [2020-10-29 04:58:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 04:58:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:28,285 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 04:58:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:58:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:58:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:58:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 04:58:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:58:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-29 04:58:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 175 proven. 69 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-29 04:58:29,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287609213] [2020-10-29 04:58:29,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:29,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:58:29,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626108642] [2020-10-29 04:58:29,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:29,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:29,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:29,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:29,172 INFO L87 Difference]: Start difference. First operand 107935 states and 137554 transitions. Second operand 8 states. [2020-10-29 04:58:29,425 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:31,120 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:58:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:34,206 INFO L93 Difference]: Finished difference Result 228729 states and 293247 transitions. [2020-10-29 04:58:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:58:34,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-10-29 04:58:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:34,547 INFO L225 Difference]: With dead ends: 228729 [2020-10-29 04:58:34,548 INFO L226 Difference]: Without dead ends: 122896 [2020-10-29 04:58:34,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:58:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122896 states. [2020-10-29 04:58:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122896 to 122450. [2020-10-29 04:58:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122450 states. [2020-10-29 04:58:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122450 states to 122450 states and 155826 transitions. [2020-10-29 04:58:37,653 INFO L78 Accepts]: Start accepts. Automaton has 122450 states and 155826 transitions. Word has length 339 [2020-10-29 04:58:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:37,654 INFO L481 AbstractCegarLoop]: Abstraction has 122450 states and 155826 transitions. [2020-10-29 04:58:37,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:58:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 122450 states and 155826 transitions. [2020-10-29 04:58:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-29 04:58:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:38,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:38,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:58:38,200 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash -731992181, now seen corresponding path program 1 times [2020-10-29 04:58:38,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:38,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020506816] [2020-10-29 04:58:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking...