/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:36:00,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:36:00,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:36:00,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:36:00,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:36:00,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:36:00,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:36:00,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:36:00,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:36:00,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:36:00,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:36:00,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:36:00,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:36:00,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:36:00,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:36:00,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:36:00,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:36:00,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:36:00,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:36:00,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:36:00,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:36:00,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:36:00,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:36:00,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:36:00,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:36:00,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:36:00,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:36:00,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:36:00,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:36:00,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:36:00,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:36:00,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:36:00,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:36:00,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:36:00,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:36:00,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:36:00,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:36:00,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:36:00,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:36:00,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:36:00,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:36:00,518 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 [2020-10-26 23:36:00,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:36:00,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:36:00,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:36:00,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:36:00,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:36:00,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:36:00,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:36:00,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:36:00,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:36:00,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:36:00,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:36:00,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:36:00,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:36:00,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:36:00,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:36:00,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:36:00,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:36:00,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:36:00,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:36:00,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:36:00,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:36:00,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:36:00,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:36:00,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:36:00,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:36:00,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:36:00,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:36:00,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:36:00,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:36:00,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:36:00,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:36:00,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:36:00,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:36:00,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:36:00,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:36:00,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-26 23:36:01,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3dac4f/307fd9ce2ccf43ea975114feb4f13e0a/FLAGaab457a68 [2020-10-26 23:36:02,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:36:02,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label07.c [2020-10-26 23:36:02,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3dac4f/307fd9ce2ccf43ea975114feb4f13e0a/FLAGaab457a68 [2020-10-26 23:36:02,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c3dac4f/307fd9ce2ccf43ea975114feb4f13e0a [2020-10-26 23:36:02,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:36:02,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:36:02,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:36:02,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:36:02,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:36:02,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:02" (1/1) ... [2020-10-26 23:36:02,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13136ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:02, skipping insertion in model container [2020-10-26 23:36:02,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:36:02" (1/1) ... [2020-10-26 23:36:02,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:36:02,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:36:03,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:36:03,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:36:04,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:36:04,200 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:36:04,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04 WrapperNode [2020-10-26 23:36:04,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:36:04,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:36:04,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:36:04,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:36:04,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (1/1) ... [2020-10-26 23:36:04,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:36:04,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:36:04,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:36:04,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:36:04,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (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 [2020-10-26 23:36:04,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:36:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:36:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:36:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:36:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:36:04,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:36:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:36:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:36:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:36:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:36:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:36:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:36:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:36:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:36:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:36:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:36:08,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:36:08,021 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:36:08,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:08 BoogieIcfgContainer [2020-10-26 23:36:08,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:36:08,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:36:08,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:36:08,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:36:08,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:36:02" (1/3) ... [2020-10-26 23:36:08,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6580704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:08, skipping insertion in model container [2020-10-26 23:36:08,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:36:04" (2/3) ... [2020-10-26 23:36:08,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6580704c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:36:08, skipping insertion in model container [2020-10-26 23:36:08,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:36:08" (3/3) ... [2020-10-26 23:36:08,035 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label07.c [2020-10-26 23:36:08,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:36:08,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:36:08,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:36:08,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:36:08,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:36:08,107 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:36:08,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:36:08,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:36:08,107 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:36:08,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:36:08,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:36:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:36:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 23:36:08,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:08,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:08,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash 137821679, now seen corresponding path program 1 times [2020-10-26 23:36:08,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:08,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428382451] [2020-10-26 23:36:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:08,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:08,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 23:36:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-26 23:36:08,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 23:36:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:36:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:09,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:09,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:09,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:36:09,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:36:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:36:09,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428382451] [2020-10-26 23:36:09,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:36:09,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:36:09,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664034574] [2020-10-26 23:36:09,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:36:09,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:36:09,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:36:09,185 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:36:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:18,213 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:36:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:36:18,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 23:36:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:18,240 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:36:18,241 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:36:18,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:36:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:36:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:36:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:36:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:36:18,380 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 17 [2020-10-26 23:36:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:18,381 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:36:18,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:36:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:36:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 23:36:18,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:18,386 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] [2020-10-26 23:36:18,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:36:18,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1239479847, now seen corresponding path program 1 times [2020-10-26 23:36:18,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:18,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051850612] [2020-10-26 23:36:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:20,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:20,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 23:36:20,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:20,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2169 [2020-10-26 23:36:20,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:36:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:36:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:20,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:20,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:20,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:36:20,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:20,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:21,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:36:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-26 23:36:21,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:36:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:36:21,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051850612] [2020-10-26 23:36:21,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:36:21,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:36:21,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137951398] [2020-10-26 23:36:21,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:21,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:21,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:21,185 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:36:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:31,760 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-26 23:36:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:36:31,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-26 23:36:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:31,776 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:36:31,776 INFO L226 Difference]: Without dead ends: 1026 [2020-10-26 23:36:31,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:36:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-26 23:36:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-26 23:36:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-26 23:36:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-26 23:36:31,847 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 86 [2020-10-26 23:36:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:31,848 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-26 23:36:31,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-26 23:36:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 23:36:31,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:31,854 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] [2020-10-26 23:36:31,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:36:31,855 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:31,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1477352383, now seen corresponding path program 1 times [2020-10-26 23:36:31,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:31,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70926805] [2020-10-26 23:36:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:32,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 23:36:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-26 23:36:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:36:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:36:32,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:36:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:36:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:36:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:36:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:36:33,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70926805] [2020-10-26 23:36:33,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:36:33,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:36:33,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41579190] [2020-10-26 23:36:33,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:33,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:33,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:33,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:33,163 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-26 23:36:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:41,557 INFO L93 Difference]: Finished difference Result 2394 states and 3405 transitions. [2020-10-26 23:36:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:36:41,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-26 23:36:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:41,579 INFO L225 Difference]: With dead ends: 2394 [2020-10-26 23:36:41,579 INFO L226 Difference]: Without dead ends: 1692 [2020-10-26 23:36:41,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:36:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-10-26 23:36:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1347. [2020-10-26 23:36:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-26 23:36:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1744 transitions. [2020-10-26 23:36:41,715 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1744 transitions. Word has length 91 [2020-10-26 23:36:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:41,716 INFO L481 AbstractCegarLoop]: Abstraction has 1347 states and 1744 transitions. [2020-10-26 23:36:41,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1744 transitions. [2020-10-26 23:36:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-26 23:36:41,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:41,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:36:41,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:36:41,735 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:41,736 INFO L82 PathProgramCache]: Analyzing trace with hash 369159912, now seen corresponding path program 1 times [2020-10-26 23:36:41,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:41,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098086974] [2020-10-26 23:36:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:46,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:46,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-26 23:36:46,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:36:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4387 [2020-10-26 23:36:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:36:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-26 23:36:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:36:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:46,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:46,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:36:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:36:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:36:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:36:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-26 23:36:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:36:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:36:47,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098086974] [2020-10-26 23:36:47,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:47,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:36:47,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376404604] [2020-10-26 23:36:47,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:36:47,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:47,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:36:47,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:36:47,375 INFO L87 Difference]: Start difference. First operand 1347 states and 1744 transitions. Second operand 9 states. [2020-10-26 23:37:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:11,379 INFO L93 Difference]: Finished difference Result 5320 states and 7713 transitions. [2020-10-26 23:37:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:37:11,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 191 [2020-10-26 23:37:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:11,412 INFO L225 Difference]: With dead ends: 5320 [2020-10-26 23:37:11,412 INFO L226 Difference]: Without dead ends: 3979 [2020-10-26 23:37:11,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:37:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2020-10-26 23:37:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3883. [2020-10-26 23:37:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-10-26 23:37:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5097 transitions. [2020-10-26 23:37:11,608 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5097 transitions. Word has length 191 [2020-10-26 23:37:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:11,610 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5097 transitions. [2020-10-26 23:37:11,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:37:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5097 transitions. [2020-10-26 23:37:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-26 23:37:11,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:11,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:11,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:37:11,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash 155073622, now seen corresponding path program 1 times [2020-10-26 23:37:11,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:11,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913469766] [2020-10-26 23:37:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:16,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:37:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:37:16,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:17,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:17,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:37:17,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-26 23:37:17,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:37:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:37:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:37:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:17,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:37:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:37:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:37:18,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913469766] [2020-10-26 23:37:18,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:18,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:18,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376442178] [2020-10-26 23:37:18,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:18,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:18,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:18,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:18,031 INFO L87 Difference]: Start difference. First operand 3883 states and 5097 transitions. Second operand 7 states. [2020-10-26 23:37:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:30,458 INFO L93 Difference]: Finished difference Result 8132 states and 10706 transitions. [2020-10-26 23:37:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:37:30,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-26 23:37:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:30,489 INFO L225 Difference]: With dead ends: 8132 [2020-10-26 23:37:30,489 INFO L226 Difference]: Without dead ends: 4259 [2020-10-26 23:37:30,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:37:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2020-10-26 23:37:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4201. [2020-10-26 23:37:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4201 states. [2020-10-26 23:37:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 5431 transitions. [2020-10-26 23:37:30,642 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 5431 transitions. Word has length 297 [2020-10-26 23:37:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:30,643 INFO L481 AbstractCegarLoop]: Abstraction has 4201 states and 5431 transitions. [2020-10-26 23:37:30,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 5431 transitions. [2020-10-26 23:37:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-26 23:37:30,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:30,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:30,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:37:30,652 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1150542497, now seen corresponding path program 1 times [2020-10-26 23:37:30,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:30,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096895915] [2020-10-26 23:37:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:33,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-26 23:37:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3208 [2020-10-26 23:37:33,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:33,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:33,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:37:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:37:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:34,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:34,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:37:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-26 23:37:34,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:37:34,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:37:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:35,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:37:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:37:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:37:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096895915] [2020-10-26 23:37:35,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:35,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:35,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222534647] [2020-10-26 23:37:35,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:35,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:35,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:35,556 INFO L87 Difference]: Start difference. First operand 4201 states and 5431 transitions. Second operand 7 states. [2020-10-26 23:37:51,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:51,529 INFO L93 Difference]: Finished difference Result 9745 states and 13493 transitions. [2020-10-26 23:37:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:37:51,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-26 23:37:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:51,563 INFO L225 Difference]: With dead ends: 9745 [2020-10-26 23:37:51,564 INFO L226 Difference]: Without dead ends: 5861 [2020-10-26 23:37:51,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:37:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2020-10-26 23:37:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 5825. [2020-10-26 23:37:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2020-10-26 23:37:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 7547 transitions. [2020-10-26 23:37:51,758 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 7547 transitions. Word has length 371 [2020-10-26 23:37:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:51,759 INFO L481 AbstractCegarLoop]: Abstraction has 5825 states and 7547 transitions. [2020-10-26 23:37:51,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 7547 transitions. [2020-10-26 23:37:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-26 23:37:51,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:51,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:51,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:37:51,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:51,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1102758430, now seen corresponding path program 1 times [2020-10-26 23:37:51,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:51,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653352693] [2020-10-26 23:37:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:37:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:57,123 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:37:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:37:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:57,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:37:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:37:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:37:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:37:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:37:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-26 23:37:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:37:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:37:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:58,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:58,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:37:58,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:37:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 123 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:37:58,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653352693] [2020-10-26 23:37:58,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:58,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:58,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859112896] [2020-10-26 23:37:58,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:58,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:58,720 INFO L87 Difference]: Start difference. First operand 5825 states and 7547 transitions. Second operand 7 states. [2020-10-26 23:38:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:14,513 INFO L93 Difference]: Finished difference Result 14167 states and 18780 transitions. [2020-10-26 23:38:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:14,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-26 23:38:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:14,568 INFO L225 Difference]: With dead ends: 14167 [2020-10-26 23:38:14,568 INFO L226 Difference]: Without dead ends: 8333 [2020-10-26 23:38:14,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8333 states. [2020-10-26 23:38:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8333 to 8317. [2020-10-26 23:38:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-26 23:38:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 10167 transitions. [2020-10-26 23:38:14,820 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 10167 transitions. Word has length 392 [2020-10-26 23:38:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:14,820 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 10167 transitions. [2020-10-26 23:38:14,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:14,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 10167 transitions. [2020-10-26 23:38:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 23:38:14,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:14,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:14,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:38:14,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash -682952524, now seen corresponding path program 1 times [2020-10-26 23:38:14,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:14,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383808397] [2020-10-26 23:38:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 439 [2020-10-26 23:38:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:20,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:20,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:38:20,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:20,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:20,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:20,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:38:20,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-26 23:38:20,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:38:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:38:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:38:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:38:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:38:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:21,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:38:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 91 proven. 68 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 23:38:21,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383808397] [2020-10-26 23:38:21,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:21,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:21,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144388177] [2020-10-26 23:38:21,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:38:21,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:38:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:38:21,754 INFO L87 Difference]: Start difference. First operand 8317 states and 10167 transitions. Second operand 8 states. [2020-10-26 23:38:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:35,000 INFO L93 Difference]: Finished difference Result 15742 states and 19429 transitions. [2020-10-26 23:38:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:38:35,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 446 [2020-10-26 23:38:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:35,031 INFO L225 Difference]: With dead ends: 15742 [2020-10-26 23:38:35,031 INFO L226 Difference]: Without dead ends: 7743 [2020-10-26 23:38:35,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:38:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7743 states. [2020-10-26 23:38:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7743 to 6139. [2020-10-26 23:38:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6139 states. [2020-10-26 23:38:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 7109 transitions. [2020-10-26 23:38:35,216 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 7109 transitions. Word has length 446 [2020-10-26 23:38:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:35,217 INFO L481 AbstractCegarLoop]: Abstraction has 6139 states and 7109 transitions. [2020-10-26 23:38:35,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:38:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 7109 transitions. [2020-10-26 23:38:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-26 23:38:35,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:35,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:35,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:38:35,224 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1783357494, now seen corresponding path program 1 times [2020-10-26 23:38:35,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:35,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863210479] [2020-10-26 23:38:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-26 23:38:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:38:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:38:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:38:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:38:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:40,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:40,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:38:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:38:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:38:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:38:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:38:41,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:38:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 139 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:38:41,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863210479] [2020-10-26 23:38:41,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:41,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:41,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49983873] [2020-10-26 23:38:41,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:38:41,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:41,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:38:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:38:41,749 INFO L87 Difference]: Start difference. First operand 6139 states and 7109 transitions. Second operand 7 states. [2020-10-26 23:38:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:52,699 INFO L93 Difference]: Finished difference Result 13916 states and 16143 transitions. [2020-10-26 23:38:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:52,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-26 23:38:52,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:52,736 INFO L225 Difference]: With dead ends: 13916 [2020-10-26 23:38:52,736 INFO L226 Difference]: Without dead ends: 8090 [2020-10-26 23:38:52,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:38:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2020-10-26 23:38:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 7722. [2020-10-26 23:38:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7722 states. [2020-10-26 23:38:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 8820 transitions. [2020-10-26 23:38:52,966 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 8820 transitions. Word has length 482 [2020-10-26 23:38:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:52,967 INFO L481 AbstractCegarLoop]: Abstraction has 7722 states and 8820 transitions. [2020-10-26 23:38:52,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 8820 transitions. [2020-10-26 23:38:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-26 23:38:52,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:52,974 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:52,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:38:52,975 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash -81077550, now seen corresponding path program 1 times [2020-10-26 23:38:52,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:52,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911670918] [2020-10-26 23:38:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2492 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:38:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:55,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:55,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:38:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:38:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:38:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:38:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:38:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911670918] [2020-10-26 23:38:56,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:56,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:56,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611031889] [2020-10-26 23:38:56,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:38:56,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:38:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:38:56,539 INFO L87 Difference]: Start difference. First operand 7722 states and 8820 transitions. Second operand 7 states. [2020-10-26 23:39:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:07,252 INFO L93 Difference]: Finished difference Result 17743 states and 21231 transitions. [2020-10-26 23:39:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:07,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-26 23:39:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:07,299 INFO L225 Difference]: With dead ends: 17743 [2020-10-26 23:39:07,300 INFO L226 Difference]: Without dead ends: 10023 [2020-10-26 23:39:07,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10023 states. [2020-10-26 23:39:07,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10023 to 9610. [2020-10-26 23:39:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9610 states. [2020-10-26 23:39:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 10989 transitions. [2020-10-26 23:39:07,596 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 10989 transitions. Word has length 494 [2020-10-26 23:39:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:07,597 INFO L481 AbstractCegarLoop]: Abstraction has 9610 states and 10989 transitions. [2020-10-26 23:39:07,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 10989 transitions. [2020-10-26 23:39:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-26 23:39:07,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:07,605 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:39:07,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:39:07,605 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:07,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1821449142, now seen corresponding path program 1 times [2020-10-26 23:39:07,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:07,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060334816] [2020-10-26 23:39:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:11,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:11,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-26 23:39:11,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:39:11,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3435 [2020-10-26 23:39:11,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:39:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:39:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:11,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:39:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:11,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:39:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:39:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:39:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:39:12,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060334816] [2020-10-26 23:39:12,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:12,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:12,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103971948] [2020-10-26 23:39:12,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:12,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:12,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:12,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:12,093 INFO L87 Difference]: Start difference. First operand 9610 states and 10989 transitions. Second operand 7 states. [2020-10-26 23:39:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:39:26,325 INFO L93 Difference]: Finished difference Result 22090 states and 26000 transitions. [2020-10-26 23:39:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:39:26,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-26 23:39:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:39:26,374 INFO L225 Difference]: With dead ends: 22090 [2020-10-26 23:39:26,374 INFO L226 Difference]: Without dead ends: 12480 [2020-10-26 23:39:26,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:39:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2020-10-26 23:39:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12142. [2020-10-26 23:39:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12142 states. [2020-10-26 23:39:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 13856 transitions. [2020-10-26 23:39:26,708 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 13856 transitions. Word has length 496 [2020-10-26 23:39:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:39:26,709 INFO L481 AbstractCegarLoop]: Abstraction has 12142 states and 13856 transitions. [2020-10-26 23:39:26,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:39:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 13856 transitions. [2020-10-26 23:39:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-26 23:39:26,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:39:26,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:39:26,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:39:26,721 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:39:26,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:39:26,722 INFO L82 PathProgramCache]: Analyzing trace with hash 216512594, now seen corresponding path program 1 times [2020-10-26 23:39:26,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:39:26,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565763169] [2020-10-26 23:39:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:39:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-26 23:39:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:39:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2758 [2020-10-26 23:39:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-26 23:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:39:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:39:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:29,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:39:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:39:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:39:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:39:30,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:39:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:39:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:39:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:39:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:39:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:39:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:39:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:39:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:39:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:39:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:39:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-26 23:39:30,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565763169] [2020-10-26 23:39:30,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:39:30,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:39:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142465788] [2020-10-26 23:39:30,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:39:30,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:39:30,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:39:30,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:39:30,847 INFO L87 Difference]: Start difference. First operand 12142 states and 13856 transitions. Second operand 7 states. [2020-10-26 23:39:35,219 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66