/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:12:35,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:12:35,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:12:35,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:12:35,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:12:35,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:12:35,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:12:35,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:12:35,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:12:35,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:12:35,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:12:35,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:12:35,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:12:35,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:12:35,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:12:35,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:12:35,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:12:35,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:12:35,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:12:35,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:12:35,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:12:35,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:12:35,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:12:35,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:12:35,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:12:35,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:12:35,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:12:35,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:12:35,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:12:35,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:12:35,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:12:35,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:12:35,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:12:35,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:12:35,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:12:35,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:12:35,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:12:35,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:12:35,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:12:35,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:12:35,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:12:35,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:12:35,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:12:35,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:12:35,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:12:35,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:12:35,791 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:12:35,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:12:35,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:12:35,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:12:35,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:12:35,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:12:35,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:12:35,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:12:35,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:12:35,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:12:35,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:12:35,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:12:35,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:12:35,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:12:35,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:12:35,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:12:35,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:12:35,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:12:35,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:12:35,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:12:35,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:12:35,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:12:35,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:12:35,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:12:35,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:12:35,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:12:36,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:12:36,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:12:36,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:12:36,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:12:36,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:12:36,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-29 12:12:36,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a489eb730/2dfda949187747aa82e84b5f97cafe6f/FLAG056f9660f [2020-10-29 12:12:36,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:12:36,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-29 12:12:36,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a489eb730/2dfda949187747aa82e84b5f97cafe6f/FLAG056f9660f [2020-10-29 12:12:37,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a489eb730/2dfda949187747aa82e84b5f97cafe6f [2020-10-29 12:12:37,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:12:37,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:12:37,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:12:37,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:12:37,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:12:37,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6ecc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37, skipping insertion in model container [2020-10-29 12:12:37,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:12:37,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:12:37,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:12:37,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:12:37,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:12:37,561 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:12:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37 WrapperNode [2020-10-29 12:12:37,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:12:37,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:12:37,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:12:37,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:12:37,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... [2020-10-29 12:12:37,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:12:37,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:12:37,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:12:37,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:12:37,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:12:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:12:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:12:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:12:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-29 12:12:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:12:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:12:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:12:37,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-29 12:12:37,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:12:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:12:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:12:38,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:12:38,091 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:12:38,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:12:38 BoogieIcfgContainer [2020-10-29 12:12:38,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:12:38,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:12:38,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:12:38,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:12:38,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:12:37" (1/3) ... [2020-10-29 12:12:38,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:12:38, skipping insertion in model container [2020-10-29 12:12:38,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:12:37" (2/3) ... [2020-10-29 12:12:38,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:12:38, skipping insertion in model container [2020-10-29 12:12:38,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:12:38" (3/3) ... [2020-10-29 12:12:38,112 INFO L111 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2020-10-29 12:12:38,125 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:12:38,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:12:38,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:12:38,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:12:38,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:12:38,176 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:12:38,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:12:38,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:12:38,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:12:38,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:12:38,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:12:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 12:12:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:12:38,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:38,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:38,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:38,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-29 12:12:38,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:38,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593585481] [2020-10-29 12:12:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:40,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:12:40,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:12:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-29 12:12:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:40,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:12:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:12:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:12:40,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:12:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:40,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:12:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:40,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:12:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:40,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:40,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:12:40,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:40,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:12:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:12:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:40,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:12:40,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:40,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:12:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:12:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:40,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:40,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:12:40,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:40,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:12:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:12:40,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593585481] [2020-10-29 12:12:40,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:12:40,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:12:40,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506346691] [2020-10-29 12:12:40,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:12:40,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:40,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:12:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:12:40,747 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 12:12:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:41,168 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 12:12:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:12:41,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:12:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:41,184 INFO L225 Difference]: With dead ends: 87 [2020-10-29 12:12:41,184 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:12:41,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:12:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:12:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 12:12:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:12:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 12:12:41,251 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 12:12:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:41,252 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 12:12:41,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:12:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 12:12:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 12:12:41,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:41,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:41,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:12:41,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1940454449, now seen corresponding path program 1 times [2020-10-29 12:12:41,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:41,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437418145] [2020-10-29 12:12:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:43,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:12:43,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:12:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2111 [2020-10-29 12:12:43,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:43,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:12:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:12:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:12:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:43,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:43,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:12:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:43,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:12:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:43,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:12:43,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:43,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:12:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:12:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:12:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:12:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:12:43,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:43,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:12:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:12:43,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:12:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:43,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:12:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:12:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:43,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:12:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:12:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:12:43,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437418145] [2020-10-29 12:12:43,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:12:43,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:12:43,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272888147] [2020-10-29 12:12:43,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:12:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:43,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:12:43,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:12:43,580 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 12:12:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:43,740 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 12:12:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:12:43,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 12:12:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:43,742 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:12:43,742 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:12:43,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:12:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:12:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 12:12:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 12:12:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 12:12:43,763 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 12:12:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:43,763 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 12:12:43,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:12:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 12:12:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:12:43,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:43,768 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:43,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:12:43,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:43,771 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-29 12:12:43,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:43,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195447711] [2020-10-29 12:12:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:48,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:12:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:12:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:12:48,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:48,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 12:12:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:12:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:12:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:12:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:12:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:48,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:12:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:12:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:48,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:12:48,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 12:12:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:48,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:12:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:12:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:12:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:12:49,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:49,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:12:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:12:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 12:12:49,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195447711] [2020-10-29 12:12:49,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:12:49,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:12:49,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831677104] [2020-10-29 12:12:49,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:12:49,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:49,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:12:49,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:12:49,038 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 12:12:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:49,219 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 12:12:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:12:49,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 12:12:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:49,220 INFO L225 Difference]: With dead ends: 56 [2020-10-29 12:12:49,221 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 12:12:49,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:12:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 12:12:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 12:12:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:12:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 12:12:49,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 12:12:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:49,230 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 12:12:49,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:12:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 12:12:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:12:49,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:49,232 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:49,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:12:49,232 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:49,233 INFO L82 PathProgramCache]: Analyzing trace with hash 790018187, now seen corresponding path program 3 times [2020-10-29 12:12:49,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:49,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881602481] [2020-10-29 12:12:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:12:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:12:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:12:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:12:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:12:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:12:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:54,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:12:54,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:12:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:12:54,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:12:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:12:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:12:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:12:54,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:12:54,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:12:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:12:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:12:54,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:12:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:54,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:12:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:12:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:12:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881602481] [2020-10-29 12:12:54,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:12:54,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:12:54,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124951607] [2020-10-29 12:12:54,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:12:54,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:12:54,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:12:54,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:12:54,529 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 12:12:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:12:54,739 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 12:12:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:12:54,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 12:12:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:12:54,740 INFO L225 Difference]: With dead ends: 60 [2020-10-29 12:12:54,740 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 12:12:54,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:12:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 12:12:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 12:12:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:12:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 12:12:54,748 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 12:12:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:12:54,749 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 12:12:54,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:12:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 12:12:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:12:54,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:12:54,750 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:12:54,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:12:54,751 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:12:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:12:54,751 INFO L82 PathProgramCache]: Analyzing trace with hash -804838007, now seen corresponding path program 4 times [2020-10-29 12:12:54,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:12:54,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158151550] [2020-10-29 12:12:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:12:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:12:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:12:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:12:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:59,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:12:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:12:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:12:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:12:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:12:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:59,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:12:59,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:12:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:59,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:12:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:12:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:12:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:12:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:59,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:12:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:12:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 12:12:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:59,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:12:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:12:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:12:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:12:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:12:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:12:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:12:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:12:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:12:59,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:12:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:12:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:12:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:12:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:12:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:12:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:12:59,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:12:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:00,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:00,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:13:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:13:00,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:00,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:13:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:00,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:13:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:13:00,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158151550] [2020-10-29 12:13:00,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:00,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:13:00,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390265309] [2020-10-29 12:13:00,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:13:00,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:00,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:13:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:13:00,072 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 12:13:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:00,394 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 12:13:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:13:00,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 12:13:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:00,396 INFO L225 Difference]: With dead ends: 64 [2020-10-29 12:13:00,396 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:13:00,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:13:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:13:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 12:13:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:13:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 12:13:00,410 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 12:13:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:00,412 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 12:13:00,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:13:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 12:13:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:13:00,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:00,415 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:00,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:13:00,416 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1925848071, now seen corresponding path program 5 times [2020-10-29 12:13:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:00,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771316326] [2020-10-29 12:13:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:13:05,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:13:05,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:05,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:13:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 12:13:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:13:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:05,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:05,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:13:05,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:13:05,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:05,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:13:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:05,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:13:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:13:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:05,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:13:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:13:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:05,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:13:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:13:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 12:13:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:05,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:13:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:13:05,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:05,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:13:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:13:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 12:13:05,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771316326] [2020-10-29 12:13:05,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:05,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:13:05,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248064460] [2020-10-29 12:13:05,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:13:05,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:13:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:13:05,763 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 12:13:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:06,042 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 12:13:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:13:06,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 12:13:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:06,045 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:13:06,045 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 12:13:06,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:13:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 12:13:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 12:13:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:13:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 12:13:06,058 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 12:13:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:06,058 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 12:13:06,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:13:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 12:13:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:13:06,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:06,063 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:06,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:13:06,066 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1118176251, now seen corresponding path program 6 times [2020-10-29 12:13:06,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:06,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758835969] [2020-10-29 12:13:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:11,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:11,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:13:11,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:11,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:11,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:11,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:13:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:11,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:13:11,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:11,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:13:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:13:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 12:13:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:13:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:13:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:13:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:13:11,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758835969] [2020-10-29 12:13:11,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:11,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:13:11,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672347170] [2020-10-29 12:13:11,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:13:11,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:13:11,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:13:11,472 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 12:13:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:11,813 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 12:13:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:13:11,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 12:13:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:11,815 INFO L225 Difference]: With dead ends: 72 [2020-10-29 12:13:11,815 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 12:13:11,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:13:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 12:13:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 12:13:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:13:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 12:13:11,822 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 12:13:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:11,823 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 12:13:11,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:13:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 12:13:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:13:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:11,824 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:11,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:13:11,825 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2067192445, now seen corresponding path program 7 times [2020-10-29 12:13:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:11,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101477569] [2020-10-29 12:13:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:13:16,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:13:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:16,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:16,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:16,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:13:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 12:13:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:13:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:13:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:13:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:13:17,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:13:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:13:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:17,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:13:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:13:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 12:13:17,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101477569] [2020-10-29 12:13:17,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:17,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:13:17,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637087867] [2020-10-29 12:13:17,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:13:17,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:13:17,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:13:17,254 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 12:13:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:17,571 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 12:13:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:13:17,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 12:13:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:17,578 INFO L225 Difference]: With dead ends: 76 [2020-10-29 12:13:17,578 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:13:17,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:13:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:13:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 12:13:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 12:13:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 12:13:17,593 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 12:13:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:17,593 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 12:13:17,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:13:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 12:13:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:13:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:17,594 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:17,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:13:17,595 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267841, now seen corresponding path program 8 times [2020-10-29 12:13:17,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:17,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529735016] [2020-10-29 12:13:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:22,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:13:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:13:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:22,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:22,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:22,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:22,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:22,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:22,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:13:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:13:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:23,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:23,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:13:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:13:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:13:23,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529735016] [2020-10-29 12:13:23,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:23,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:13:23,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326698758] [2020-10-29 12:13:23,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:13:23,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:13:23,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:13:23,021 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 12:13:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:23,483 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 12:13:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:13:23,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 12:13:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:23,485 INFO L225 Difference]: With dead ends: 80 [2020-10-29 12:13:23,485 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 12:13:23,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:13:23,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 12:13:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 12:13:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:13:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 12:13:23,494 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 12:13:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:23,494 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 12:13:23,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:13:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 12:13:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:13:23,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:23,495 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:23,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:13:23,496 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash -838413057, now seen corresponding path program 9 times [2020-10-29 12:13:23,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:23,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870336042] [2020-10-29 12:13:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:28,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:13:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:28,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 12:13:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:13:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:13:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:13:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:13:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:28,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:13:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:13:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:13:28,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870336042] [2020-10-29 12:13:28,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:28,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:13:28,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670889951] [2020-10-29 12:13:28,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:13:28,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:28,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:13:28,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:13:28,931 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 12:13:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:29,387 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 12:13:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:13:29,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 12:13:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:29,389 INFO L225 Difference]: With dead ends: 84 [2020-10-29 12:13:29,389 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 12:13:29,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:13:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 12:13:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 12:13:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:13:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 12:13:29,398 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 12:13:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:29,398 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 12:13:29,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:13:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 12:13:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:13:29,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:29,399 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:29,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:13:29,400 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:29,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1418585347, now seen corresponding path program 10 times [2020-10-29 12:13:29,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:29,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297717097] [2020-10-29 12:13:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:29,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:34,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:13:34,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:13:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:13:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:13:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:13:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 12:13:34,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:34,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:13:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:13:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:13:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:13:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:13:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 12:13:34,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297717097] [2020-10-29 12:13:34,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:34,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:13:34,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652430114] [2020-10-29 12:13:34,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:13:34,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:13:34,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:13:34,900 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 12:13:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:35,356 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 12:13:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:13:35,357 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 12:13:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:35,358 INFO L225 Difference]: With dead ends: 88 [2020-10-29 12:13:35,358 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:13:35,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:13:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:13:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 12:13:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 12:13:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 12:13:35,368 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 12:13:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:35,369 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 12:13:35,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:13:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 12:13:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:13:35,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:35,370 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:35,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:13:35,371 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1760963195, now seen corresponding path program 11 times [2020-10-29 12:13:35,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:35,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146688421] [2020-10-29 12:13:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:13:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:13:40,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:13:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:40,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:13:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:13:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:13:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:13:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:13:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:13:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:13:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 12:13:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:40,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:13:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:13:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:13:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 12:13:41,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146688421] [2020-10-29 12:13:41,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:41,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:13:41,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703865271] [2020-10-29 12:13:41,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:13:41,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:41,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:13:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:13:41,022 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 12:13:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:41,656 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 12:13:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:13:41,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 12:13:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:41,658 INFO L225 Difference]: With dead ends: 92 [2020-10-29 12:13:41,658 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 12:13:41,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:13:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 12:13:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 12:13:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 12:13:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 12:13:41,673 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 12:13:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:41,674 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 12:13:41,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:13:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 12:13:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:13:41,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:41,684 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:41,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:13:41,685 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1860344967, now seen corresponding path program 12 times [2020-10-29 12:13:41,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:41,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599957180] [2020-10-29 12:13:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:13:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 12:13:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:13:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:46,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:46,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:46,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:13:46,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:46,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 12:13:46,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:46,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:13:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:13:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:13:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:13:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:47,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:47,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:13:47,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 12:13:47,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:47,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:13:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:47,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:13:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:13:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:47,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:13:47,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:13:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:13:47,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599957180] [2020-10-29 12:13:47,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:47,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:13:47,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868792609] [2020-10-29 12:13:47,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:13:47,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:13:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:13:47,479 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 12:13:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:48,043 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 12:13:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:13:48,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 12:13:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:48,045 INFO L225 Difference]: With dead ends: 96 [2020-10-29 12:13:48,045 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 12:13:48,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:13:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 12:13:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 12:13:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 12:13:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 12:13:48,054 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 12:13:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:48,055 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 12:13:48,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:13:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 12:13:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 12:13:48,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:48,056 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:48,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:13:48,057 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash -511040009, now seen corresponding path program 13 times [2020-10-29 12:13:48,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:48,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006446729] [2020-10-29 12:13:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 12:13:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:13:53,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:53,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:13:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 12:13:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:13:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:13:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:13:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:13:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:13:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:53,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:13:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:53,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:13:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:13:53,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 12:13:53,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006446729] [2020-10-29 12:13:53,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:53,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:13:53,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379178406] [2020-10-29 12:13:53,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:13:53,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:53,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:13:53,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:13:53,649 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 12:13:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:13:54,232 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 12:13:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:13:54,233 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 12:13:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:13:54,234 INFO L225 Difference]: With dead ends: 100 [2020-10-29 12:13:54,235 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:13:54,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:13:54,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:13:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 12:13:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 12:13:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 12:13:54,246 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 12:13:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:13:54,248 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 12:13:54,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:13:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 12:13:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 12:13:54,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:13:54,250 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:13:54,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:13:54,250 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:13:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:13:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash -520695307, now seen corresponding path program 14 times [2020-10-29 12:13:54,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:13:54,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757924537] [2020-10-29 12:13:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:13:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:59,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:13:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:13:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:59,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:13:59,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:13:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:13:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:13:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:13:59,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:13:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:13:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:59,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:13:59,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:13:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 12:13:59,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:13:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:13:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:13:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:13:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:13:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:13:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:13:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:13:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 12:13:59,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757924537] [2020-10-29 12:13:59,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:13:59,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:13:59,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344445110] [2020-10-29 12:13:59,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:13:59,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:13:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:13:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:13:59,891 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 12:14:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:00,462 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 12:14:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:14:00,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 12:14:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:00,463 INFO L225 Difference]: With dead ends: 104 [2020-10-29 12:14:00,463 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 12:14:00,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:14:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 12:14:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 12:14:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 12:14:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 12:14:00,481 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 12:14:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:00,481 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 12:14:00,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:14:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 12:14:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 12:14:00,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:00,483 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:00,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:14:00,483 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:00,484 INFO L82 PathProgramCache]: Analyzing trace with hash -181024909, now seen corresponding path program 15 times [2020-10-29 12:14:00,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:00,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998776426] [2020-10-29 12:14:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 12:14:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:14:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:14:05,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:14:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:14:06,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:06,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:14:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:14:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:14:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 12:14:06,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998776426] [2020-10-29 12:14:06,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:06,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:14:06,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413353040] [2020-10-29 12:14:06,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:14:06,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:06,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:14:06,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:14:06,231 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 12:14:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:06,930 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 12:14:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:14:06,931 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 12:14:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:06,933 INFO L225 Difference]: With dead ends: 108 [2020-10-29 12:14:06,933 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 12:14:06,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:14:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 12:14:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 12:14:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 12:14:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 12:14:06,940 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 12:14:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:06,941 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 12:14:06,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:14:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 12:14:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 12:14:06,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:06,942 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:06,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:14:06,943 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:06,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash -114203023, now seen corresponding path program 16 times [2020-10-29 12:14:06,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:06,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789057394] [2020-10-29 12:14:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:11,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 12:14:11,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:14:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:11,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:14:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 12:14:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:14:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:14:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:12,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:14:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 12:14:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789057394] [2020-10-29 12:14:12,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:12,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:14:12,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296550010] [2020-10-29 12:14:12,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:14:12,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:12,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:14:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:14:12,799 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 12:14:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:13,557 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 12:14:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:14:13,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 12:14:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:13,559 INFO L225 Difference]: With dead ends: 112 [2020-10-29 12:14:13,559 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 12:14:13,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:14:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 12:14:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 12:14:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 12:14:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 12:14:13,568 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 12:14:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:13,568 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 12:14:13,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:14:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 12:14:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 12:14:13,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:13,570 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:13,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:14:13,570 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:13,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1391202031, now seen corresponding path program 17 times [2020-10-29 12:14:13,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:13,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750436594] [2020-10-29 12:14:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:14:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 12:14:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:14:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:18,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:18,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:14:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:14:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:14:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:19,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:14:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:14:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:14:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:14:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 12:14:19,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750436594] [2020-10-29 12:14:19,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:19,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:14:19,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278772846] [2020-10-29 12:14:19,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:14:19,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:19,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:14:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:14:19,461 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 12:14:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:20,269 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 12:14:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:14:20,269 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 12:14:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:20,270 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:14:20,270 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 12:14:20,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:14:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 12:14:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 12:14:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 12:14:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 12:14:20,279 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 12:14:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:20,280 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 12:14:20,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:14:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 12:14:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 12:14:20,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:20,281 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:20,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:14:20,282 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1988091667, now seen corresponding path program 18 times [2020-10-29 12:14:20,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:20,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88163535] [2020-10-29 12:14:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:20,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:14:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 12:14:25,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:14:25,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:14:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:14:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:14:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:14:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:14:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:14:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 12:14:26,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88163535] [2020-10-29 12:14:26,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:26,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:14:26,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144841091] [2020-10-29 12:14:26,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:14:26,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:26,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:14:26,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:14:26,296 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 12:14:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:27,137 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 12:14:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:14:27,141 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 12:14:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:27,142 INFO L225 Difference]: With dead ends: 120 [2020-10-29 12:14:27,142 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 12:14:27,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:14:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 12:14:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 12:14:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 12:14:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 12:14:27,156 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 12:14:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:27,157 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 12:14:27,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:14:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 12:14:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:14:27,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:27,163 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:27,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:14:27,164 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:27,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1528822891, now seen corresponding path program 19 times [2020-10-29 12:14:27,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:27,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927390258] [2020-10-29 12:14:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 12:14:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:14:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:32,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:14:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:14:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:14:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:33,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 12:14:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:14:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:14:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 12:14:33,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927390258] [2020-10-29 12:14:33,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:33,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:14:33,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411340071] [2020-10-29 12:14:33,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:14:33,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:33,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:14:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:14:33,508 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 12:14:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:34,404 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-29 12:14:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:14:34,405 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 12:14:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:34,406 INFO L225 Difference]: With dead ends: 123 [2020-10-29 12:14:34,406 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 12:14:34,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:14:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 12:14:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 12:14:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 12:14:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 12:14:34,415 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 12:14:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:34,415 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 12:14:34,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:14:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 12:14:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 12:14:34,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:34,417 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:34,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:14:34,417 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1393951081, now seen corresponding path program 20 times [2020-10-29 12:14:34,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:34,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722865398] [2020-10-29 12:14:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:14:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:14:35,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:35,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:35,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:35,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:35,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 12:14:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:35,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722865398] [2020-10-29 12:14:35,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:14:35,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:14:35,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628260213] [2020-10-29 12:14:35,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:14:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:14:35,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:35,497 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2020-10-29 12:14:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:35,566 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-29 12:14:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:14:35,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-29 12:14:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:35,568 INFO L225 Difference]: With dead ends: 122 [2020-10-29 12:14:35,568 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 12:14:35,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:14:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 12:14:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-29 12:14:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 12:14:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-29 12:14:35,574 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 154 [2020-10-29 12:14:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:35,575 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-29 12:14:35,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:14:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-29 12:14:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 12:14:35,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:35,577 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:35,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:14:35,577 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash -582676249, now seen corresponding path program 1 times [2020-10-29 12:14:35,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:35,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661441350] [2020-10-29 12:14:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 12:14:37,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-29 12:14:37,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:14:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:14:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:37,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 12:14:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:37,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:37,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:37,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661441350] [2020-10-29 12:14:37,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:37,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:14:37,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728284711] [2020-10-29 12:14:37,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:14:37,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:37,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:14:37,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:37,501 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2020-10-29 12:14:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:37,576 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2020-10-29 12:14:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:14:37,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 12:14:37,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:37,579 INFO L225 Difference]: With dead ends: 124 [2020-10-29 12:14:37,580 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 12:14:37,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 12:14:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-29 12:14:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 12:14:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-29 12:14:37,587 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 156 [2020-10-29 12:14:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:37,587 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-29 12:14:37,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:14:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-29 12:14:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 12:14:37,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:37,589 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:37,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:14:37,589 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1745995547, now seen corresponding path program 2 times [2020-10-29 12:14:37,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:37,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925037067] [2020-10-29 12:14:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:40,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 12:14:40,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2704 [2020-10-29 12:14:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:40,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:14:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:40,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:40,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:40,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:40,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:40,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:40,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:40,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 12:14:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:40,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925037067] [2020-10-29 12:14:40,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:40,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:14:40,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794418636] [2020-10-29 12:14:40,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:14:40,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:14:40,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:14:40,438 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-10-29 12:14:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:40,543 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2020-10-29 12:14:40,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:14:40,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-29 12:14:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:40,546 INFO L225 Difference]: With dead ends: 126 [2020-10-29 12:14:40,547 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 12:14:40,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:14:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 12:14:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-29 12:14:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 12:14:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-29 12:14:40,552 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 158 [2020-10-29 12:14:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:40,552 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-29 12:14:40,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:14:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-29 12:14:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:14:40,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:40,554 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:40,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:14:40,554 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1290623331, now seen corresponding path program 3 times [2020-10-29 12:14:40,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:40,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991489822] [2020-10-29 12:14:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:14:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3495 [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:14:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:44,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:14:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 12:14:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:14:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:44,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991489822] [2020-10-29 12:14:44,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:44,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:14:44,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367706703] [2020-10-29 12:14:44,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:14:44,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:14:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:44,211 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 7 states. [2020-10-29 12:14:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:44,317 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2020-10-29 12:14:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:14:44,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-29 12:14:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:44,319 INFO L225 Difference]: With dead ends: 128 [2020-10-29 12:14:44,319 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 12:14:44,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 12:14:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-29 12:14:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 12:14:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-29 12:14:44,325 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 160 [2020-10-29 12:14:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:44,326 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-29 12:14:44,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:14:44,326 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-29 12:14:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 12:14:44,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:44,327 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:44,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:14:44,327 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1096396191, now seen corresponding path program 4 times [2020-10-29 12:14:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:44,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623292653] [2020-10-29 12:14:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4948 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:49,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:49,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 12:14:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:49,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623292653] [2020-10-29 12:14:49,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:49,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:14:49,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319473841] [2020-10-29 12:14:49,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:14:49,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:14:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:14:49,429 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 8 states. [2020-10-29 12:14:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:49,540 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2020-10-29 12:14:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:14:49,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-10-29 12:14:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:49,542 INFO L225 Difference]: With dead ends: 130 [2020-10-29 12:14:49,543 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 12:14:49,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:14:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 12:14:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-29 12:14:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 12:14:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-29 12:14:49,550 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 162 [2020-10-29 12:14:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:49,550 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-29 12:14:49,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:14:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-29 12:14:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 12:14:49,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:49,551 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:49,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:14:49,552 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1509620769, now seen corresponding path program 5 times [2020-10-29 12:14:49,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:49,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312940972] [2020-10-29 12:14:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4997 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:14:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:54,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:54,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:54,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:54,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:54,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:14:54,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:54,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:14:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 12:14:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:14:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:14:54,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312940972] [2020-10-29 12:14:54,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:54,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:14:54,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094985391] [2020-10-29 12:14:54,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:14:54,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:54,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:14:54,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:14:54,714 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 9 states. [2020-10-29 12:14:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:54,832 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2020-10-29 12:14:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:14:54,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-29 12:14:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:54,834 INFO L225 Difference]: With dead ends: 132 [2020-10-29 12:14:54,834 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 12:14:54,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:14:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 12:14:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-29 12:14:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 12:14:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-29 12:14:54,842 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 164 [2020-10-29 12:14:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:54,842 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-29 12:14:54,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:14:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-29 12:14:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 12:14:54,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:54,844 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:54,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:14:54,844 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 813518301, now seen corresponding path program 6 times [2020-10-29 12:14:54,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:54,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067242820] [2020-10-29 12:14:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5544 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:15:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:00,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:00,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:00,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:00,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 12:15:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:00,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067242820] [2020-10-29 12:15:00,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:00,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:15:00,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228248698] [2020-10-29 12:15:00,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:15:00,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:15:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:15:00,557 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2020-10-29 12:15:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:00,683 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2020-10-29 12:15:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:15:00,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-10-29 12:15:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:00,685 INFO L225 Difference]: With dead ends: 134 [2020-10-29 12:15:00,685 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 12:15:00,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:15:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 12:15:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-29 12:15:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 12:15:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-29 12:15:00,692 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 166 [2020-10-29 12:15:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:00,693 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-29 12:15:00,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:15:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-29 12:15:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 12:15:00,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:00,694 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:00,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:15:00,694 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash -32829349, now seen corresponding path program 7 times [2020-10-29 12:15:00,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:00,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921917245] [2020-10-29 12:15:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 12:15:05,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-29 12:15:05,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:05,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 12:15:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:06,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:06,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:15:06,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:06,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:06,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921917245] [2020-10-29 12:15:06,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:06,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:15:06,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271640013] [2020-10-29 12:15:06,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:15:06,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:06,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:15:06,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:15:06,058 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 11 states. [2020-10-29 12:15:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:06,190 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2020-10-29 12:15:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:15:06,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-29 12:15:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:06,191 INFO L225 Difference]: With dead ends: 136 [2020-10-29 12:15:06,191 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 12:15:06,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:15:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 12:15:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-29 12:15:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 12:15:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-29 12:15:06,203 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 168 [2020-10-29 12:15:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:06,203 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-29 12:15:06,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:15:06,203 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-29 12:15:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 12:15:06,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:06,205 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:06,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:15:06,205 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:06,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1624102055, now seen corresponding path program 8 times [2020-10-29 12:15:06,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:06,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098697198] [2020-10-29 12:15:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:15:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:11,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:11,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:11,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:11,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:11,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:11,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:11,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 12:15:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:11,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098697198] [2020-10-29 12:15:11,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:11,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:15:11,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995089201] [2020-10-29 12:15:11,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:15:11,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:11,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:15:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:15:11,474 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 12 states. [2020-10-29 12:15:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:11,619 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2020-10-29 12:15:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:15:11,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-29 12:15:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:11,620 INFO L225 Difference]: With dead ends: 138 [2020-10-29 12:15:11,620 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 12:15:11,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:15:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 12:15:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-29 12:15:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 12:15:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-29 12:15:11,632 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 170 [2020-10-29 12:15:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:11,633 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-29 12:15:11,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:15:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-29 12:15:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 12:15:11,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:11,634 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:11,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:15:11,635 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:11,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:11,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1828815145, now seen corresponding path program 9 times [2020-10-29 12:15:11,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:11,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211003466] [2020-10-29 12:15:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 12:15:16,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:15:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:16,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:15:16,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 12:15:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:15:16,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211003466] [2020-10-29 12:15:17,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:15:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763649538] [2020-10-29 12:15:17,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:15:17,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:15:17,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:15:17,030 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 13 states. [2020-10-29 12:15:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:17,196 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2020-10-29 12:15:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:15:17,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 172 [2020-10-29 12:15:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:17,197 INFO L225 Difference]: With dead ends: 140 [2020-10-29 12:15:17,197 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 12:15:17,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:15:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 12:15:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-29 12:15:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 12:15:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-29 12:15:17,204 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 172 [2020-10-29 12:15:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:17,205 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-29 12:15:17,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:15:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-29 12:15:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 12:15:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:17,206 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:17,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:15:17,206 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:17,207 INFO L82 PathProgramCache]: Analyzing trace with hash -989599019, now seen corresponding path program 10 times [2020-10-29 12:15:17,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:17,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857910526] [2020-10-29 12:15:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:15:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:22,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 12:15:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3835 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:22,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857910526] [2020-10-29 12:15:22,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:22,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:15:22,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219191239] [2020-10-29 12:15:22,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:15:22,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:22,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:15:22,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:15:22,591 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 14 states. [2020-10-29 12:15:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:22,710 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2020-10-29 12:15:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:15:22,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 174 [2020-10-29 12:15:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:22,713 INFO L225 Difference]: With dead ends: 142 [2020-10-29 12:15:22,713 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 12:15:22,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:15:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 12:15:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-29 12:15:22,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 12:15:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-29 12:15:22,723 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 174 [2020-10-29 12:15:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:22,724 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-29 12:15:22,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:15:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-29 12:15:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 12:15:22,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:22,726 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:22,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:15:22,727 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1956753581, now seen corresponding path program 11 times [2020-10-29 12:15:22,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:22,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997831777] [2020-10-29 12:15:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 12:15:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:15:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:28,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:28,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:28,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:28,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:28,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:28,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 12:15:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:28,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997831777] [2020-10-29 12:15:28,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:28,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:15:28,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853084415] [2020-10-29 12:15:28,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:15:28,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:15:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:15:28,181 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 15 states. [2020-10-29 12:15:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:28,310 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2020-10-29 12:15:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:15:28,311 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2020-10-29 12:15:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:28,313 INFO L225 Difference]: With dead ends: 144 [2020-10-29 12:15:28,313 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 12:15:28,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:15:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 12:15:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-29 12:15:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 12:15:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-29 12:15:28,320 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 176 [2020-10-29 12:15:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:28,320 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-29 12:15:28,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:15:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-29 12:15:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 12:15:28,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:28,321 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:28,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:15:28,322 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:28,322 INFO L82 PathProgramCache]: Analyzing trace with hash 615615569, now seen corresponding path program 12 times [2020-10-29 12:15:28,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:28,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026407155] [2020-10-29 12:15:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 12:15:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:15:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:15:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:15:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:33,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:33,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:15:33,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 12:15:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:33,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026407155] [2020-10-29 12:15:33,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:33,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:15:33,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721983960] [2020-10-29 12:15:33,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:15:33,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:15:33,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:15:33,651 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 16 states. [2020-10-29 12:15:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:33,836 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2020-10-29 12:15:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:15:33,836 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-29 12:15:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:33,837 INFO L225 Difference]: With dead ends: 146 [2020-10-29 12:15:33,838 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 12:15:33,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:15:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 12:15:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-29 12:15:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 12:15:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-29 12:15:33,845 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 178 [2020-10-29 12:15:33,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:33,846 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-29 12:15:33,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:15:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-29 12:15:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 12:15:33,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:33,847 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:33,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 12:15:33,848 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:33,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1238793777, now seen corresponding path program 13 times [2020-10-29 12:15:33,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:33,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42006944] [2020-10-29 12:15:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:15:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 12:15:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:39,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:15:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:39,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3904 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:39,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42006944] [2020-10-29 12:15:39,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:39,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:15:39,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238390382] [2020-10-29 12:15:39,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:15:39,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:39,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:15:39,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:15:39,201 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 17 states. [2020-10-29 12:15:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:39,390 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-10-29 12:15:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:15:39,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 180 [2020-10-29 12:15:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:39,392 INFO L225 Difference]: With dead ends: 148 [2020-10-29 12:15:39,392 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 12:15:39,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:15:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 12:15:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-29 12:15:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 12:15:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-29 12:15:39,401 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 180 [2020-10-29 12:15:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:39,402 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-29 12:15:39,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:15:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-29 12:15:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 12:15:39,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:39,403 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:39,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 12:15:39,404 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:39,404 INFO L82 PathProgramCache]: Analyzing trace with hash -914747443, now seen corresponding path program 14 times [2020-10-29 12:15:39,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:39,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412632442] [2020-10-29 12:15:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 12:15:44,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 12:15:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:15:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:44,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 12:15:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:15:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:15:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3931 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:44,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412632442] [2020-10-29 12:15:44,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:15:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161302653] [2020-10-29 12:15:44,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:15:44,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:15:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:44,776 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 18 states. [2020-10-29 12:15:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:44,992 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2020-10-29 12:15:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:15:44,992 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2020-10-29 12:15:44,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:44,994 INFO L225 Difference]: With dead ends: 150 [2020-10-29 12:15:44,994 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 12:15:44,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 12:15:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-29 12:15:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 12:15:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-29 12:15:45,003 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 182 [2020-10-29 12:15:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:45,003 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-29 12:15:45,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:15:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-29 12:15:45,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 12:15:45,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:45,005 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:45,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 12:15:45,005 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1256134219, now seen corresponding path program 15 times [2020-10-29 12:15:45,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:45,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800960541] [2020-10-29 12:15:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:15:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:50,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:15:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:50,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:50,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800960541] [2020-10-29 12:15:50,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:50,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:15:50,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402261744] [2020-10-29 12:15:50,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:15:50,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:50,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:15:50,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:15:50,364 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 19 states. [2020-10-29 12:15:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:50,546 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2020-10-29 12:15:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:15:50,547 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 184 [2020-10-29 12:15:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:50,548 INFO L225 Difference]: With dead ends: 152 [2020-10-29 12:15:50,548 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 12:15:50,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:15:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 12:15:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-29 12:15:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 12:15:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-29 12:15:50,555 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 184 [2020-10-29 12:15:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:50,556 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-29 12:15:50,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:15:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-29 12:15:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 12:15:50,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:50,557 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:50,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 12:15:50,558 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:50,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:50,558 INFO L82 PathProgramCache]: Analyzing trace with hash 119305545, now seen corresponding path program 16 times [2020-10-29 12:15:50,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:50,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767955341] [2020-10-29 12:15:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:55,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:55,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 12:15:55,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-29 12:15:55,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:55,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:15:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:15:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:15:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:55,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:55,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:55,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:55,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:55,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:55,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:55,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:56,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:15:56,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:56,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 12:15:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:56,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:56,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:15:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:15:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3991 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:15:56,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767955341] [2020-10-29 12:15:56,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:56,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:15:56,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277134896] [2020-10-29 12:15:56,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:15:56,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:56,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:15:56,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:15:56,110 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 20 states. [2020-10-29 12:15:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:56,321 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2020-10-29 12:15:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:15:56,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 186 [2020-10-29 12:15:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:56,323 INFO L225 Difference]: With dead ends: 154 [2020-10-29 12:15:56,323 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 12:15:56,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:15:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 12:15:56,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-29 12:15:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 12:15:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-29 12:15:56,334 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 186 [2020-10-29 12:15:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:56,334 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-29 12:15:56,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:15:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-29 12:15:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:15:56,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:56,336 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:56,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 12:15:56,336 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1451356985, now seen corresponding path program 17 times [2020-10-29 12:15:56,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:56,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908304136] [2020-10-29 12:15:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5249 [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:16:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:16:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:16:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:01,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:01,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:01,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:01,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:01,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:01,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:16:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:16:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 12:16:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:01,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:01,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:16:01,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908304136] [2020-10-29 12:16:01,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:01,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:16:01,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733041849] [2020-10-29 12:16:01,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:16:01,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:01,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:16:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:16:01,930 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 21 states. [2020-10-29 12:16:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:02,154 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2020-10-29 12:16:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:16:02,155 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 188 [2020-10-29 12:16:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:02,156 INFO L225 Difference]: With dead ends: 156 [2020-10-29 12:16:02,156 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 12:16:02,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:16:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 12:16:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-29 12:16:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 12:16:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-29 12:16:02,164 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 188 [2020-10-29 12:16:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:02,164 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-29 12:16:02,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:16:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-29 12:16:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 12:16:02,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:02,166 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:02,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 12:16:02,166 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash 970439877, now seen corresponding path program 18 times [2020-10-29 12:16:02,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:02,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651888147] [2020-10-29 12:16:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:02,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:16:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:16:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:16:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:07,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:07,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:07,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:07,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:07,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:07,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:16:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 12:16:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:16:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:16:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:16:07,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651888147] [2020-10-29 12:16:07,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:07,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:16:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150704628] [2020-10-29 12:16:07,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:16:07,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:16:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:16:07,677 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 22 states. [2020-10-29 12:16:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:07,914 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-29 12:16:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:16:07,915 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 190 [2020-10-29 12:16:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:07,916 INFO L225 Difference]: With dead ends: 157 [2020-10-29 12:16:07,916 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:16:07,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:16:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:16:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-29 12:16:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 12:16:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-29 12:16:07,928 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 190 [2020-10-29 12:16:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:07,929 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-29 12:16:07,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:16:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-29 12:16:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 12:16:07,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:07,930 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:07,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 12:16:07,930 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:07,931 INFO L82 PathProgramCache]: Analyzing trace with hash 444949827, now seen corresponding path program 19 times [2020-10-29 12:16:07,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:07,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001264985] [2020-10-29 12:16:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...