/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:21:29,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:21:29,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:21:29,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:21:29,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:21:29,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:21:29,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:21:29,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:21:29,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:21:29,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:21:29,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:21:29,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:21:29,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:21:29,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:21:29,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:21:29,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:21:29,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:21:29,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:21:29,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:21:29,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:21:29,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:21:29,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:21:29,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:21:29,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:21:29,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:21:29,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:21:29,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:21:29,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:21:29,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:21:29,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:21:29,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:21:29,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:21:29,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:21:29,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:21:29,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:21:29,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:21:29,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:21:29,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:21:29,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:21:29,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:21:29,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:21:29,565 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 [2020-10-28 10:21:29,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:21:29,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:21:29,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:21:29,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:21:29,600 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:21:29,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:21:29,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:21:29,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:21:29,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:21:29,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:21:29,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:21:29,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:21:29,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:21:29,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:21:29,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:21:29,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:21:29,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:21:29,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:21:29,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:21:29,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:21:29,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:21:29,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:21:29,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:21:29,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:21:29,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:21:29,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:21:29,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:21:29,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:21:29,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:21:29,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:21:30,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:21:30,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:21:30,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:21:30,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:21:30,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:21:30,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51.c [2020-10-28 10:21:30,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cd80d3a1/993da06752ef4f8a92753f7e62b7d631/FLAGc4160edb1 [2020-10-28 10:21:31,011 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:21:31,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label51.c [2020-10-28 10:21:31,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cd80d3a1/993da06752ef4f8a92753f7e62b7d631/FLAGc4160edb1 [2020-10-28 10:21:31,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cd80d3a1/993da06752ef4f8a92753f7e62b7d631 [2020-10-28 10:21:31,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:21:31,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:21:31,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:21:31,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:21:31,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:21:31,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:21:31" (1/1) ... [2020-10-28 10:21:31,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:31, skipping insertion in model container [2020-10-28 10:21:31,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:21:31" (1/1) ... [2020-10-28 10:21:31,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:21:31,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:21:32,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:21:32,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:21:32,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:21:32,698 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:21:32,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32 WrapperNode [2020-10-28 10:21:32,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:21:32,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:21:32,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:21:32,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:21:32,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (1/1) ... [2020-10-28 10:21:32,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:21:32,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:21:32,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:21:32,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:21:32,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (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 [2020-10-28 10:21:33,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:21:33,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:21:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:21:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:21:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:21:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:21:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:21:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:21:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:21:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:21:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:21:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:21:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:21:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:21:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:21:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:21:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:21:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:21:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:21:35,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:21:35,253 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:21:35,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:21:35 BoogieIcfgContainer [2020-10-28 10:21:35,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:21:35,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:21:35,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:21:35,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:21:35,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:21:31" (1/3) ... [2020-10-28 10:21:35,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311738fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:21:35, skipping insertion in model container [2020-10-28 10:21:35,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:21:32" (2/3) ... [2020-10-28 10:21:35,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311738fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:21:35, skipping insertion in model container [2020-10-28 10:21:35,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:21:35" (3/3) ... [2020-10-28 10:21:35,265 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label51.c [2020-10-28 10:21:35,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:21:35,284 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:21:35,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:21:35,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:21:35,331 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:21:35,331 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:21:35,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:21:35,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:21:35,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:21:35,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:21:35,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:21:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:21:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 10:21:35,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:35,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:35,378 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash 52827956, now seen corresponding path program 1 times [2020-10-28 10:21:35,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:35,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116864830] [2020-10-28 10:21:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 10:21:40,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:21:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4466 [2020-10-28 10:21:40,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:40,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:21:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-28 10:21:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:21:40,925 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:41,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:21:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:41,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:21:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:21:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:21:41,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116864830] [2020-10-28 10:21:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:21:41,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:21:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001326111] [2020-10-28 10:21:41,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:21:41,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:41,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:21:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:21:41,148 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:21:41,455 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:21:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:44,918 INFO L93 Difference]: Finished difference Result 891 states and 1544 transitions. [2020-10-28 10:21:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:21:44,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2020-10-28 10:21:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:44,941 INFO L225 Difference]: With dead ends: 891 [2020-10-28 10:21:44,941 INFO L226 Difference]: Without dead ends: 483 [2020-10-28 10:21:44,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:21:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-28 10:21:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 477. [2020-10-28 10:21:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-28 10:21:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 725 transitions. [2020-10-28 10:21:45,066 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 725 transitions. Word has length 195 [2020-10-28 10:21:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:45,070 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 725 transitions. [2020-10-28 10:21:45,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:21:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 725 transitions. [2020-10-28 10:21:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-28 10:21:45,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:45,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:45,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:21:45,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:45,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1353512053, now seen corresponding path program 1 times [2020-10-28 10:21:45,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:45,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936156656] [2020-10-28 10:21:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-28 10:21:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:21:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3451 [2020-10-28 10:21:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:48,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:21:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 10:21:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:21:49,145 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:49,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:49,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:21:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:49,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:21:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:21:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:49,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:21:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:21:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936156656] [2020-10-28 10:21:49,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:49,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:21:49,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361093923] [2020-10-28 10:21:49,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:21:49,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:49,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:21:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:21:49,424 INFO L87 Difference]: Start difference. First operand 477 states and 725 transitions. Second operand 5 states. [2020-10-28 10:21:49,786 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:21:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:53,206 INFO L93 Difference]: Finished difference Result 1379 states and 2124 transitions. [2020-10-28 10:21:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:21:53,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-28 10:21:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:53,221 INFO L225 Difference]: With dead ends: 1379 [2020-10-28 10:21:53,221 INFO L226 Difference]: Without dead ends: 908 [2020-10-28 10:21:53,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:21:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-10-28 10:21:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 903. [2020-10-28 10:21:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-28 10:21:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1289 transitions. [2020-10-28 10:21:53,296 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1289 transitions. Word has length 207 [2020-10-28 10:21:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:53,298 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1289 transitions. [2020-10-28 10:21:53,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:21:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1289 transitions. [2020-10-28 10:21:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 10:21:53,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:53,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:53,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:21:53,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2078437003, now seen corresponding path program 1 times [2020-10-28 10:21:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:53,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402068770] [2020-10-28 10:21:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:58,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:58,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 10:21:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:21:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 10:21:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:58,918 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:21:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:58,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,080 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:21:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:21:59,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:21:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:59,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:21:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:21:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:21:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:21:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:21:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 10:21:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:21:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:21:59,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402068770] [2020-10-28 10:21:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:59,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:21:59,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443887660] [2020-10-28 10:21:59,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:21:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:21:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:21:59,317 INFO L87 Difference]: Start difference. First operand 903 states and 1289 transitions. Second operand 6 states. [2020-10-28 10:21:59,711 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:03,319 INFO L93 Difference]: Finished difference Result 2693 states and 4010 transitions. [2020-10-28 10:22:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:22:03,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2020-10-28 10:22:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:03,340 INFO L225 Difference]: With dead ends: 2693 [2020-10-28 10:22:03,341 INFO L226 Difference]: Without dead ends: 1796 [2020-10-28 10:22:03,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2020-10-28 10:22:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1760. [2020-10-28 10:22:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-10-28 10:22:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2320 transitions. [2020-10-28 10:22:03,453 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2320 transitions. Word has length 217 [2020-10-28 10:22:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:03,453 INFO L481 AbstractCegarLoop]: Abstraction has 1760 states and 2320 transitions. [2020-10-28 10:22:03,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:22:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2320 transitions. [2020-10-28 10:22:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 10:22:03,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:03,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:03,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:22:03,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:03,463 INFO L82 PathProgramCache]: Analyzing trace with hash -90083872, now seen corresponding path program 1 times [2020-10-28 10:22:03,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:03,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34844058] [2020-10-28 10:22:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:06,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:06,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-28 10:22:06,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:22:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2979 [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 10:22:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:06,921 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:06,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:06,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:22:06,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:07,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:22:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:07,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34844058] [2020-10-28 10:22:07,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:07,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:22:07,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890717855] [2020-10-28 10:22:07,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:22:07,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:07,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:22:07,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:07,275 INFO L87 Difference]: Start difference. First operand 1760 states and 2320 transitions. Second operand 6 states. [2020-10-28 10:22:07,655 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:09,475 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:22:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:12,697 INFO L93 Difference]: Finished difference Result 6510 states and 8897 transitions. [2020-10-28 10:22:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:22:12,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2020-10-28 10:22:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:12,730 INFO L225 Difference]: With dead ends: 6510 [2020-10-28 10:22:12,730 INFO L226 Difference]: Without dead ends: 4756 [2020-10-28 10:22:12,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2020-10-28 10:22:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4710. [2020-10-28 10:22:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4710 states. [2020-10-28 10:22:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 6286 transitions. [2020-10-28 10:22:12,942 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 6286 transitions. Word has length 225 [2020-10-28 10:22:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:12,943 INFO L481 AbstractCegarLoop]: Abstraction has 4710 states and 6286 transitions. [2020-10-28 10:22:12,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:22:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 6286 transitions. [2020-10-28 10:22:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 10:22:12,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:12,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:12,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:22:12,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:12,960 INFO L82 PathProgramCache]: Analyzing trace with hash 846508847, now seen corresponding path program 1 times [2020-10-28 10:22:12,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:12,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396634513] [2020-10-28 10:22:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:13,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 10:22:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 10:22:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:16,061 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:16,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:16,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:16,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:16,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:22:16,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:16,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:22:16,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 10:22:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:16,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:22:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:22:16,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396634513] [2020-10-28 10:22:16,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:16,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:16,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987124467] [2020-10-28 10:22:16,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:22:16,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:16,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:22:16,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:22:16,475 INFO L87 Difference]: Start difference. First operand 4710 states and 6286 transitions. Second operand 5 states. [2020-10-28 10:22:17,041 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:20,590 INFO L93 Difference]: Finished difference Result 11316 states and 15631 transitions. [2020-10-28 10:22:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:22:20,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-28 10:22:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:20,633 INFO L225 Difference]: With dead ends: 11316 [2020-10-28 10:22:20,633 INFO L226 Difference]: Without dead ends: 6612 [2020-10-28 10:22:20,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6612 states. [2020-10-28 10:22:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6612 to 6605. [2020-10-28 10:22:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6605 states. [2020-10-28 10:22:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9024 transitions. [2020-10-28 10:22:20,898 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9024 transitions. Word has length 226 [2020-10-28 10:22:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:20,899 INFO L481 AbstractCegarLoop]: Abstraction has 6605 states and 9024 transitions. [2020-10-28 10:22:20,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:22:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9024 transitions. [2020-10-28 10:22:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 10:22:20,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:20,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:20,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:22:20,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -295495256, now seen corresponding path program 1 times [2020-10-28 10:22:20,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:20,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669464325] [2020-10-28 10:22:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:23,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:23,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-28 10:22:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2549 [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 10:22:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:23,884 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:23,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:23,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:22:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:24,145 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:22:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:22:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:22:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:22:24,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669464325] [2020-10-28 10:22:24,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:24,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:22:24,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734577753] [2020-10-28 10:22:24,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:22:24,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:22:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:24,380 INFO L87 Difference]: Start difference. First operand 6605 states and 9024 transitions. Second operand 6 states. [2020-10-28 10:22:24,648 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:22:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:28,261 INFO L93 Difference]: Finished difference Result 18233 states and 26375 transitions. [2020-10-28 10:22:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:22:28,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2020-10-28 10:22:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:28,355 INFO L225 Difference]: With dead ends: 18233 [2020-10-28 10:22:28,355 INFO L226 Difference]: Without dead ends: 11634 [2020-10-28 10:22:28,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11634 states. [2020-10-28 10:22:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11634 to 11506. [2020-10-28 10:22:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11506 states. [2020-10-28 10:22:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11506 states to 11506 states and 15827 transitions. [2020-10-28 10:22:28,849 INFO L78 Accepts]: Start accepts. Automaton has 11506 states and 15827 transitions. Word has length 229 [2020-10-28 10:22:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:28,850 INFO L481 AbstractCegarLoop]: Abstraction has 11506 states and 15827 transitions. [2020-10-28 10:22:28,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:22:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 11506 states and 15827 transitions. [2020-10-28 10:22:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-28 10:22:28,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:28,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:28,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:22:28,893 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:28,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2110232804, now seen corresponding path program 1 times [2020-10-28 10:22:28,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:28,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865563994] [2020-10-28 10:22:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:34,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:34,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:22:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-28 10:22:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:34,418 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:34,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:34,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:34,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:34,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:22:34,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:34,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:22:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 10:22:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:22:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:22:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 64 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:22:34,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865563994] [2020-10-28 10:22:34,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:34,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:22:34,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380788975] [2020-10-28 10:22:34,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:22:34,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:22:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:34,917 INFO L87 Difference]: Start difference. First operand 11506 states and 15827 transitions. Second operand 6 states. [2020-10-28 10:22:35,174 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:38,570 INFO L93 Difference]: Finished difference Result 30688 states and 44264 transitions. [2020-10-28 10:22:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:22:38,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-28 10:22:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:38,667 INFO L225 Difference]: With dead ends: 30688 [2020-10-28 10:22:38,667 INFO L226 Difference]: Without dead ends: 19188 [2020-10-28 10:22:38,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2020-10-28 10:22:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 18987. [2020-10-28 10:22:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18987 states. [2020-10-28 10:22:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18987 states to 18987 states and 26798 transitions. [2020-10-28 10:22:39,421 INFO L78 Accepts]: Start accepts. Automaton has 18987 states and 26798 transitions. Word has length 267 [2020-10-28 10:22:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:39,422 INFO L481 AbstractCegarLoop]: Abstraction has 18987 states and 26798 transitions. [2020-10-28 10:22:39,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:22:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18987 states and 26798 transitions. [2020-10-28 10:22:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 10:22:39,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:39,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 10:22:39,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:22:39,496 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash -88730533, now seen corresponding path program 1 times [2020-10-28 10:22:39,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:39,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143453390] [2020-10-28 10:22:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:44,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:44,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 10:22:44,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:22:44,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 10:22:44,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:44,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:44,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:22:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 10:22:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-10-28 10:22:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:22:45,046 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:45,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:22:45,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:22:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 10:22:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:45,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:22:45,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 10:22:45,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:45,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:22:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 54 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:22:45,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143453390] [2020-10-28 10:22:45,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:45,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:22:45,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919542658] [2020-10-28 10:22:45,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:22:45,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:45,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:22:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:22:45,702 INFO L87 Difference]: Start difference. First operand 18987 states and 26798 transitions. Second operand 6 states. [2020-10-28 10:22:46,074 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:22:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:50,111 INFO L93 Difference]: Finished difference Result 45060 states and 68003 transitions. [2020-10-28 10:22:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:22:50,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 272 [2020-10-28 10:22:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:50,259 INFO L225 Difference]: With dead ends: 45060 [2020-10-28 10:22:50,259 INFO L226 Difference]: Without dead ends: 26917 [2020-10-28 10:22:50,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26917 states. [2020-10-28 10:22:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26917 to 26037. [2020-10-28 10:22:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26037 states. [2020-10-28 10:22:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26037 states to 26037 states and 35872 transitions. [2020-10-28 10:22:51,876 INFO L78 Accepts]: Start accepts. Automaton has 26037 states and 35872 transitions. Word has length 272 [2020-10-28 10:22:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:51,876 INFO L481 AbstractCegarLoop]: Abstraction has 26037 states and 35872 transitions. [2020-10-28 10:22:51,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:22:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26037 states and 35872 transitions. [2020-10-28 10:22:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 10:22:51,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:51,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:22:51,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:22:51,966 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:51,967 INFO L82 PathProgramCache]: Analyzing trace with hash 941494036, now seen corresponding path program 1 times [2020-10-28 10:22:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:51,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940519893] [2020-10-28 10:22:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:55,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:55,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3125 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 10:22:55,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:55,463 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:22:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:22:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:22:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:22:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:22:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:22:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 10:22:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:22:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:22:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:22:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 75 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 10:22:56,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940519893] [2020-10-28 10:22:56,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:56,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:22:56,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546518091] [2020-10-28 10:22:56,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:22:56,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:22:56,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:22:56,041 INFO L87 Difference]: Start difference. First operand 26037 states and 35872 transitions. Second operand 8 states. [2020-10-28 10:22:56,300 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:22:57,980 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:00,678 INFO L93 Difference]: Finished difference Result 51660 states and 73234 transitions. [2020-10-28 10:23:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:23:00,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 275 [2020-10-28 10:23:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:00,791 INFO L225 Difference]: With dead ends: 51660 [2020-10-28 10:23:00,791 INFO L226 Difference]: Without dead ends: 26469 [2020-10-28 10:23:00,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:23:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26469 states. [2020-10-28 10:23:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26469 to 26139. [2020-10-28 10:23:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26139 states. [2020-10-28 10:23:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26139 states to 26139 states and 33163 transitions. [2020-10-28 10:23:01,877 INFO L78 Accepts]: Start accepts. Automaton has 26139 states and 33163 transitions. Word has length 275 [2020-10-28 10:23:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:01,878 INFO L481 AbstractCegarLoop]: Abstraction has 26139 states and 33163 transitions. [2020-10-28 10:23:01,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:23:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 26139 states and 33163 transitions. [2020-10-28 10:23:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-28 10:23:01,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:01,943 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:23:01,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:23:01,944 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1370162626, now seen corresponding path program 1 times [2020-10-28 10:23:01,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:01,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443588695] [2020-10-28 10:23:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:02,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:23:07,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 10:23:07,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:07,312 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:23:07,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:23:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 10:23:07,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:23:07,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 10:23:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:23:07,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 10:23:07,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:23:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 10:23:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:23:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 207 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:23:08,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443588695] [2020-10-28 10:23:08,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:08,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:23:08,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834424333] [2020-10-28 10:23:08,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:23:08,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:08,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:23:08,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:23:08,113 INFO L87 Difference]: Start difference. First operand 26139 states and 33163 transitions. Second operand 8 states. [2020-10-28 10:23:09,030 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:10,060 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:14,146 INFO L93 Difference]: Finished difference Result 73627 states and 109879 transitions. [2020-10-28 10:23:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:23:14,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 326 [2020-10-28 10:23:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:14,390 INFO L225 Difference]: With dead ends: 73627 [2020-10-28 10:23:14,390 INFO L226 Difference]: Without dead ends: 48334 [2020-10-28 10:23:14,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:23:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48334 states. [2020-10-28 10:23:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48334 to 46118. [2020-10-28 10:23:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46118 states. [2020-10-28 10:23:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46118 states to 46118 states and 57231 transitions. [2020-10-28 10:23:16,552 INFO L78 Accepts]: Start accepts. Automaton has 46118 states and 57231 transitions. Word has length 326 [2020-10-28 10:23:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:16,553 INFO L481 AbstractCegarLoop]: Abstraction has 46118 states and 57231 transitions. [2020-10-28 10:23:16,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:23:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 46118 states and 57231 transitions. [2020-10-28 10:23:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 10:23:16,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:16,649 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-28 10:23:16,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:23:16,650 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:16,650 INFO L82 PathProgramCache]: Analyzing trace with hash 394925385, now seen corresponding path program 1 times [2020-10-28 10:23:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:16,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621183974] [2020-10-28 10:23:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:16,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:21,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:23:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:23:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,028 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:23:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:23:22,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:23:22,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:22,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:22,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 10:23:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:23:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:23:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:23:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 10:23:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:23:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 10:23:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:23:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:23:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 214 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 10:23:22,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621183974] [2020-10-28 10:23:22,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:22,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:23:22,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417164789] [2020-10-28 10:23:22,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:23:22,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:22,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:23:22,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:23:22,714 INFO L87 Difference]: Start difference. First operand 46118 states and 57231 transitions. Second operand 7 states. [2020-10-28 10:23:23,242 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:23:24,831 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:23:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:30,093 INFO L93 Difference]: Finished difference Result 99809 states and 129898 transitions. [2020-10-28 10:23:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:23:30,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-28 10:23:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:30,306 INFO L225 Difference]: With dead ends: 99809 [2020-10-28 10:23:30,307 INFO L226 Difference]: Without dead ends: 54323 [2020-10-28 10:23:30,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:23:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54323 states. [2020-10-28 10:23:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54323 to 53372. [2020-10-28 10:23:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53372 states. [2020-10-28 10:23:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53372 states to 53372 states and 66157 transitions. [2020-10-28 10:23:32,316 INFO L78 Accepts]: Start accepts. Automaton has 53372 states and 66157 transitions. Word has length 328 [2020-10-28 10:23:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:32,316 INFO L481 AbstractCegarLoop]: Abstraction has 53372 states and 66157 transitions. [2020-10-28 10:23:32,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:23:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 53372 states and 66157 transitions. [2020-10-28 10:23:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-28 10:23:32,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:32,408 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:23:32,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:23:32,408 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:32,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1653587460, now seen corresponding path program 1 times [2020-10-28 10:23:32,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:32,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944076004] [2020-10-28 10:23:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-28 10:23:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 10:23:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,105 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:23:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:23:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:23:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:23:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:23:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:23:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:38,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:38,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:23:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 10:23:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:23:38,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:23:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 10:23:38,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:38,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:23:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 10:23:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:38,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:38,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 10:23:38,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 10:23:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:23:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 286 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 10:23:38,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944076004] [2020-10-28 10:23:38,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:23:38,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:23:38,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513962104] [2020-10-28 10:23:38,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:23:38,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:23:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:23:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:23:38,995 INFO L87 Difference]: Start difference. First operand 53372 states and 66157 transitions. Second operand 8 states. [2020-10-28 10:23:39,667 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:23:40,032 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:23:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:23:48,006 INFO L93 Difference]: Finished difference Result 203584 states and 276792 transitions. [2020-10-28 10:23:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:23:48,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-10-28 10:23:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:23:48,938 INFO L225 Difference]: With dead ends: 203584 [2020-10-28 10:23:48,938 INFO L226 Difference]: Without dead ends: 152563 [2020-10-28 10:23:49,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:23:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152563 states. [2020-10-28 10:23:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152563 to 149127. [2020-10-28 10:23:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149127 states. [2020-10-28 10:23:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149127 states to 149127 states and 189728 transitions. [2020-10-28 10:23:54,063 INFO L78 Accepts]: Start accepts. Automaton has 149127 states and 189728 transitions. Word has length 343 [2020-10-28 10:23:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:23:54,064 INFO L481 AbstractCegarLoop]: Abstraction has 149127 states and 189728 transitions. [2020-10-28 10:23:54,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:23:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 149127 states and 189728 transitions. [2020-10-28 10:23:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-28 10:23:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:54,737 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-28 10:23:54,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:23:54,737 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:54,738 INFO L82 PathProgramCache]: Analyzing trace with hash 310007868, now seen corresponding path program 1 times [2020-10-28 10:23:54,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:54,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176158505] [2020-10-28 10:23:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:23:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:23:59,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 10:23:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,175 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:24:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:24:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:24:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 10:24:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:24:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 10:24:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 10:24:00,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 10:24:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 10:24:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:24:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 213 proven. 54 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-28 10:24:00,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176158505] [2020-10-28 10:24:00,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:24:00,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:24:00,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955260605] [2020-10-28 10:24:00,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:24:00,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:00,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:24:00,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:24:00,814 INFO L87 Difference]: Start difference. First operand 149127 states and 189728 transitions. Second operand 8 states. [2020-10-28 10:24:01,329 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:24:02,265 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:24:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:16,225 INFO L93 Difference]: Finished difference Result 535348 states and 744283 transitions. [2020-10-28 10:24:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:24:16,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 345 [2020-10-28 10:24:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:19,232 INFO L225 Difference]: With dead ends: 535348 [2020-10-28 10:24:19,232 INFO L226 Difference]: Without dead ends: 402519 [2020-10-28 10:24:19,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:24:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402519 states. [2020-10-28 10:24:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402519 to 402073. [2020-10-28 10:24:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402073 states. [2020-10-28 10:24:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402073 states to 402073 states and 565573 transitions. [2020-10-28 10:24:36,337 INFO L78 Accepts]: Start accepts. Automaton has 402073 states and 565573 transitions. Word has length 345 [2020-10-28 10:24:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:36,338 INFO L481 AbstractCegarLoop]: Abstraction has 402073 states and 565573 transitions. [2020-10-28 10:24:36,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:24:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 402073 states and 565573 transitions.