/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/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:42:39,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:42:39,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:42:39,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:42:39,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:42:39,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:42:39,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:42:39,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:42:39,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:42:39,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:42:39,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:42:39,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:42:39,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:42:39,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:42:39,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:42:39,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:42:39,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:42:39,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:42:39,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:42:39,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:42:39,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:42:39,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:42:39,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:42:39,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:42:39,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:42:39,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:42:39,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:42:39,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:42:39,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:42:39,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:42:39,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:42:39,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:42:39,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:42:39,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:42:39,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:42:39,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:42:39,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:42:39,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:42:39,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:42:39,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:42:39,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:42:39,448 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 14:42:39,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:42:39,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:42:39,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:42:39,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:42:39,479 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:42:39,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:42:39,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:42:39,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:42:39,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:42:39,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:42:39,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:42:39,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:42:39,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:42:39,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:42:39,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:42:39,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:42:39,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:42:39,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:42:39,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:42:39,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:42:39,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:42:39,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:42:39,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:42:39,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:42:39,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:42:39,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:42:39,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:42:39,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:42:39,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:42:39,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:42:39,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:42:39,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:42:39,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:42:39,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:42:39,970 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:42:39,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-29 14:42:40,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c32e1aee/b63bf3380f1842e29a9964559039ee6a/FLAGe08fd4db4 [2020-10-29 14:42:40,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:42:40,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-29 14:42:40,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c32e1aee/b63bf3380f1842e29a9964559039ee6a/FLAGe08fd4db4 [2020-10-29 14:42:40,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c32e1aee/b63bf3380f1842e29a9964559039ee6a [2020-10-29 14:42:40,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:42:40,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:42:40,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:42:40,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:42:40,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:42:40,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:42:40" (1/1) ... [2020-10-29 14:42:41,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5345a0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:40, skipping insertion in model container [2020-10-29 14:42:41,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:42:40" (1/1) ... [2020-10-29 14:42:41,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:42:41,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:42:41,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:42:41,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:42:41,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:42:41,414 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:42:41,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41 WrapperNode [2020-10-29 14:42:41,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:42:41,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:42:41,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:42:41,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:42:41,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (1/1) ... [2020-10-29 14:42:41,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:42:41,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:42:41,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:42:41,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:42:41,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (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 14:42:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:42:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:42:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:42:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-29 14:42:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-29 14:42:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-29 14:42:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:42:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:42:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:42:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:42:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:42:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-29 14:42:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:42:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:42:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:42:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:42:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:42:42,643 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:42:42,643 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 14:42:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:42:42 BoogieIcfgContainer [2020-10-29 14:42:42,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:42:42,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:42:42,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:42:42,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:42:42,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:42:40" (1/3) ... [2020-10-29 14:42:42,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7aec7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:42:42, skipping insertion in model container [2020-10-29 14:42:42,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:42:41" (2/3) ... [2020-10-29 14:42:42,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7aec7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:42:42, skipping insertion in model container [2020-10-29 14:42:42,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:42:42" (3/3) ... [2020-10-29 14:42:42,655 INFO L111 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-29 14:42:42,667 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:42:42,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:42:42,687 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:42:42,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:42:42,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:42:42,717 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:42:42,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:42:42,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:42:42,718 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:42:42,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:42:42,718 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:42:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-29 14:42:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 14:42:42,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:42,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:42,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:42,764 INFO L82 PathProgramCache]: Analyzing trace with hash 184578931, now seen corresponding path program 1 times [2020-10-29 14:42:42,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:42,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643499654] [2020-10-29 14:42:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 14:42:47,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:42:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4177 [2020-10-29 14:42:47,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:47,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:42:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:42:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:42:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:42:47,585 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:42:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:47,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643499654] [2020-10-29 14:42:47,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:47,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:42:47,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708138145] [2020-10-29 14:42:47,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:42:47,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:47,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:42:47,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:42:47,728 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-29 14:42:48,084 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:42:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:42:49,592 INFO L93 Difference]: Finished difference Result 444 states and 768 transitions. [2020-10-29 14:42:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:42:49,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-29 14:42:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:42:49,612 INFO L225 Difference]: With dead ends: 444 [2020-10-29 14:42:49,613 INFO L226 Difference]: Without dead ends: 290 [2020-10-29 14:42:49,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:42:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-29 14:42:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 257. [2020-10-29 14:42:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-29 14:42:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 413 transitions. [2020-10-29 14:42:49,712 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 413 transitions. Word has length 47 [2020-10-29 14:42:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:42:49,712 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 413 transitions. [2020-10-29 14:42:49,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:42:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 413 transitions. [2020-10-29 14:42:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 14:42:49,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:49,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:49,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:42:49,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:49,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:49,719 INFO L82 PathProgramCache]: Analyzing trace with hash -987487058, now seen corresponding path program 1 times [2020-10-29 14:42:49,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:49,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350727386] [2020-10-29 14:42:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:50,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:42:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:42:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:42:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:54,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:42:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:42:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:42:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:55,016 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:42:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:42:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:55,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:55,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:42:55,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:42:55,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:55,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:42:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:42:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:42:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:55,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:42:55,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:42:55,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:42:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:42:55,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:42:55,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:42:55,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:42:55,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:42:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:42:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:42:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:42:55,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350727386] [2020-10-29 14:42:55,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:42:55,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:42:55,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837944323] [2020-10-29 14:42:55,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:42:55,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:42:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:42:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:42:55,136 INFO L87 Difference]: Start difference. First operand 257 states and 413 transitions. Second operand 5 states. [2020-10-29 14:42:55,305 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:42:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:42:56,883 INFO L93 Difference]: Finished difference Result 787 states and 1296 transitions. [2020-10-29 14:42:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:42:56,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-29 14:42:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:42:56,893 INFO L225 Difference]: With dead ends: 787 [2020-10-29 14:42:56,893 INFO L226 Difference]: Without dead ends: 565 [2020-10-29 14:42:56,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:42:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-29 14:42:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 474. [2020-10-29 14:42:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-29 14:42:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 774 transitions. [2020-10-29 14:42:56,988 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 774 transitions. Word has length 61 [2020-10-29 14:42:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:42:56,988 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 774 transitions. [2020-10-29 14:42:56,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:42:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 774 transitions. [2020-10-29 14:42:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 14:42:56,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:42:56,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:42:56,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:42:56,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:42:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:42:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1003005776, now seen corresponding path program 1 times [2020-10-29 14:42:56,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:42:56,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503450484] [2020-10-29 14:42:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:42:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:42:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:42:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:02,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:43:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:43:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:43:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:02,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:43:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:43:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:02,255 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:02,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:02,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:43:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:02,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503450484] [2020-10-29 14:43:02,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:02,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:02,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839662234] [2020-10-29 14:43:02,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:02,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:02,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:02,326 INFO L87 Difference]: Start difference. First operand 474 states and 774 transitions. Second operand 5 states. [2020-10-29 14:43:02,498 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:03,832 INFO L93 Difference]: Finished difference Result 1414 states and 2339 transitions. [2020-10-29 14:43:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:43:03,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-29 14:43:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:03,844 INFO L225 Difference]: With dead ends: 1414 [2020-10-29 14:43:03,844 INFO L226 Difference]: Without dead ends: 995 [2020-10-29 14:43:03,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-10-29 14:43:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 795. [2020-10-29 14:43:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-29 14:43:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1300 transitions. [2020-10-29 14:43:03,948 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1300 transitions. Word has length 61 [2020-10-29 14:43:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:03,949 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 1300 transitions. [2020-10-29 14:43:03,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1300 transitions. [2020-10-29 14:43:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 14:43:03,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:03,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:03,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:43:03,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1595687792, now seen corresponding path program 1 times [2020-10-29 14:43:03,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:03,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591513492] [2020-10-29 14:43:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:08,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:08,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:43:08,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:43:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:43:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:09,271 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:09,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:43:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:09,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:09,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:43:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:09,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591513492] [2020-10-29 14:43:09,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:09,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:43:09,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596797141] [2020-10-29 14:43:09,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:43:09,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:09,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:43:09,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:43:09,446 INFO L87 Difference]: Start difference. First operand 795 states and 1300 transitions. Second operand 6 states. [2020-10-29 14:43:09,613 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:11,532 INFO L93 Difference]: Finished difference Result 2764 states and 4668 transitions. [2020-10-29 14:43:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 14:43:11,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-29 14:43:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:11,549 INFO L225 Difference]: With dead ends: 2764 [2020-10-29 14:43:11,549 INFO L226 Difference]: Without dead ends: 2062 [2020-10-29 14:43:11,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:43:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2020-10-29 14:43:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1448. [2020-10-29 14:43:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-29 14:43:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2386 transitions. [2020-10-29 14:43:11,726 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2386 transitions. Word has length 61 [2020-10-29 14:43:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 1448 states and 2386 transitions. [2020-10-29 14:43:11,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:43:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2386 transitions. [2020-10-29 14:43:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 14:43:11,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:11,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:11,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:43:11,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1114607534, now seen corresponding path program 1 times [2020-10-29 14:43:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:11,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692792977] [2020-10-29 14:43:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:16,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:43:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:43:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4513 [2020-10-29 14:43:16,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:16,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:43:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 14:43:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:16,459 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:16,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:43:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:16,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:16,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:16,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:43:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:43:16,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692792977] [2020-10-29 14:43:16,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:43:16,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 14:43:16,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293986392] [2020-10-29 14:43:16,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:43:16,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:43:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:43:16,536 INFO L87 Difference]: Start difference. First operand 1448 states and 2386 transitions. Second operand 6 states. [2020-10-29 14:43:16,700 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:17,752 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:18,475 INFO L93 Difference]: Finished difference Result 4312 states and 7399 transitions. [2020-10-29 14:43:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:43:18,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-29 14:43:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:18,500 INFO L225 Difference]: With dead ends: 4312 [2020-10-29 14:43:18,501 INFO L226 Difference]: Without dead ends: 3568 [2020-10-29 14:43:18,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:43:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2020-10-29 14:43:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2078. [2020-10-29 14:43:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-29 14:43:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3486 transitions. [2020-10-29 14:43:18,783 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3486 transitions. Word has length 61 [2020-10-29 14:43:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:18,786 INFO L481 AbstractCegarLoop]: Abstraction has 2078 states and 3486 transitions. [2020-10-29 14:43:18,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:43:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3486 transitions. [2020-10-29 14:43:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:43:18,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:18,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:18,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:43:18,802 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:18,802 INFO L82 PathProgramCache]: Analyzing trace with hash 749036911, now seen corresponding path program 1 times [2020-10-29 14:43:18,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:18,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335932833] [2020-10-29 14:43:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:22,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 14:43:22,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4042 [2020-10-29 14:43:22,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:22,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:43:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:23,040 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:43:23,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 14:43:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:23,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:23,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:43:23,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:43:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:23,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:43:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:43:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 14:43:23,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335932833] [2020-10-29 14:43:23,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:23,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:23,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056168494] [2020-10-29 14:43:23,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:23,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:23,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:23,156 INFO L87 Difference]: Start difference. First operand 2078 states and 3486 transitions. Second operand 5 states. [2020-10-29 14:43:23,392 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:24,602 INFO L93 Difference]: Finished difference Result 4745 states and 7926 transitions. [2020-10-29 14:43:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:43:24,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-29 14:43:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:24,622 INFO L225 Difference]: With dead ends: 4745 [2020-10-29 14:43:24,622 INFO L226 Difference]: Without dead ends: 2703 [2020-10-29 14:43:24,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-10-29 14:43:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2078. [2020-10-29 14:43:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-29 14:43:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3475 transitions. [2020-10-29 14:43:24,867 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3475 transitions. Word has length 81 [2020-10-29 14:43:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:24,867 INFO L481 AbstractCegarLoop]: Abstraction has 2078 states and 3475 transitions. [2020-10-29 14:43:24,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3475 transitions. [2020-10-29 14:43:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 14:43:24,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:24,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:24,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:43:24,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:24,884 INFO L82 PathProgramCache]: Analyzing trace with hash 508782559, now seen corresponding path program 1 times [2020-10-29 14:43:24,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:24,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115802105] [2020-10-29 14:43:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:43:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:43:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,334 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:28,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:43:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:28,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 14:43:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:28,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:43:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 14:43:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:28,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:43:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 14:43:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:28,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:43:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 14:43:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115802105] [2020-10-29 14:43:28,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:43:28,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 14:43:28,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618843167] [2020-10-29 14:43:28,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:43:28,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:43:28,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:43:28,482 INFO L87 Difference]: Start difference. First operand 2078 states and 3475 transitions. Second operand 8 states. [2020-10-29 14:43:28,647 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:28,796 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:32,684 INFO L93 Difference]: Finished difference Result 10535 states and 18573 transitions. [2020-10-29 14:43:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:43:32,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 14:43:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:32,748 INFO L225 Difference]: With dead ends: 10535 [2020-10-29 14:43:32,748 INFO L226 Difference]: Without dead ends: 8517 [2020-10-29 14:43:32,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:43:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2020-10-29 14:43:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 4815. [2020-10-29 14:43:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4815 states. [2020-10-29 14:43:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 8396 transitions. [2020-10-29 14:43:33,394 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 8396 transitions. Word has length 96 [2020-10-29 14:43:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:33,394 INFO L481 AbstractCegarLoop]: Abstraction has 4815 states and 8396 transitions. [2020-10-29 14:43:33,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:43:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 8396 transitions. [2020-10-29 14:43:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:43:33,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:33,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:33,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:43:33,414 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:33,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:33,415 INFO L82 PathProgramCache]: Analyzing trace with hash 17069485, now seen corresponding path program 1 times [2020-10-29 14:43:33,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:33,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874109016] [2020-10-29 14:43:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4029 [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:37,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:43:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:43:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:37,673 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:37,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:37,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:37,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:37,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:43:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 14:43:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:37,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:43:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 14:43:37,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874109016] [2020-10-29 14:43:37,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:37,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:43:37,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267397290] [2020-10-29 14:43:37,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:43:37,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:43:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:43:37,770 INFO L87 Difference]: Start difference. First operand 4815 states and 8396 transitions. Second operand 5 states. [2020-10-29 14:43:37,926 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:39,045 INFO L93 Difference]: Finished difference Result 10829 states and 18745 transitions. [2020-10-29 14:43:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:43:39,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-29 14:43:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:39,109 INFO L225 Difference]: With dead ends: 10829 [2020-10-29 14:43:39,109 INFO L226 Difference]: Without dead ends: 6154 [2020-10-29 14:43:39,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2020-10-29 14:43:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4603. [2020-10-29 14:43:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4603 states. [2020-10-29 14:43:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7958 transitions. [2020-10-29 14:43:39,722 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7958 transitions. Word has length 81 [2020-10-29 14:43:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:39,724 INFO L481 AbstractCegarLoop]: Abstraction has 4603 states and 7958 transitions. [2020-10-29 14:43:39,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:43:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7958 transitions. [2020-10-29 14:43:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 14:43:39,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:39,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:39,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:43:39,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1012162957, now seen corresponding path program 1 times [2020-10-29 14:43:39,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:39,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979214127] [2020-10-29 14:43:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:39,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:39,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4778 [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 14:43:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:43:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:44,723 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:44,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:44,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:44,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:44,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:43:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 14:43:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 14:43:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:44,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:44,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:43:44,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 14:43:44,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 14:43:44,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979214127] [2020-10-29 14:43:44,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:43:44,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:43:44,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138245919] [2020-10-29 14:43:44,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:43:44,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:43:44,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:43:44,883 INFO L87 Difference]: Start difference. First operand 4603 states and 7958 transitions. Second operand 8 states. [2020-10-29 14:43:45,053 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 14:43:46,744 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:43:49,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:49,380 INFO L93 Difference]: Finished difference Result 16402 states and 29778 transitions. [2020-10-29 14:43:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 14:43:49,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-29 14:43:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:49,439 INFO L225 Difference]: With dead ends: 16402 [2020-10-29 14:43:49,440 INFO L226 Difference]: Without dead ends: 12720 [2020-10-29 14:43:49,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-29 14:43:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2020-10-29 14:43:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 8925. [2020-10-29 14:43:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8925 states. [2020-10-29 14:43:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 15777 transitions. [2020-10-29 14:43:50,651 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 15777 transitions. Word has length 89 [2020-10-29 14:43:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:50,652 INFO L481 AbstractCegarLoop]: Abstraction has 8925 states and 15777 transitions. [2020-10-29 14:43:50,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:43:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 15777 transitions. [2020-10-29 14:43:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 14:43:50,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:50,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:50,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:43:50,676 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1759012148, now seen corresponding path program 1 times [2020-10-29 14:43:50,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:50,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668793649] [2020-10-29 14:43:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 14:43:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:43:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3753 [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 14:43:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:54,597 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:43:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:43:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 14:43:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:54,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:43:54,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:54,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:54,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:43:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:43:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:43:54,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 14:43:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:43:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:43:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 14:43:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 14:43:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:54,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:43:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:43:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:43:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:43:54,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:43:54,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:43:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:43:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:43:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:43:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:43:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:43:54,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668793649] [2020-10-29 14:43:54,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:43:54,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 14:43:54,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798945256] [2020-10-29 14:43:54,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:43:54,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:43:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:43:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:43:54,741 INFO L87 Difference]: Start difference. First operand 8925 states and 15777 transitions. Second operand 7 states. [2020-10-29 14:43:55,046 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:43:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:43:57,943 INFO L93 Difference]: Finished difference Result 25949 states and 46443 transitions. [2020-10-29 14:43:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 14:43:57,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-29 14:43:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:43:58,026 INFO L225 Difference]: With dead ends: 25949 [2020-10-29 14:43:58,026 INFO L226 Difference]: Without dead ends: 12586 [2020-10-29 14:43:58,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:43:58,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12586 states. [2020-10-29 14:43:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12586 to 8358. [2020-10-29 14:43:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8358 states. [2020-10-29 14:43:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 14206 transitions. [2020-10-29 14:43:59,199 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 14206 transitions. Word has length 90 [2020-10-29 14:43:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:43:59,199 INFO L481 AbstractCegarLoop]: Abstraction has 8358 states and 14206 transitions. [2020-10-29 14:43:59,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:43:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 14206 transitions. [2020-10-29 14:43:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:43:59,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:43:59,260 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:43:59,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:43:59,260 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:43:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:43:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1157660588, now seen corresponding path program 1 times [2020-10-29 14:43:59,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:43:59,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874023256] [2020-10-29 14:43:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:43:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:43:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:43:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 14:44:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 14:44:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,431 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:44:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 14:44:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 14:44:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:04,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:44:04,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874023256] [2020-10-29 14:44:04,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:04,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:44:04,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034208670] [2020-10-29 14:44:04,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 14:44:04,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 14:44:04,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:44:04,606 INFO L87 Difference]: Start difference. First operand 8358 states and 14206 transitions. Second operand 7 states. [2020-10-29 14:44:04,774 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:08,298 INFO L93 Difference]: Finished difference Result 31975 states and 54277 transitions. [2020-10-29 14:44:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 14:44:08,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 14:44:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:08,452 INFO L225 Difference]: With dead ends: 31975 [2020-10-29 14:44:08,453 INFO L226 Difference]: Without dead ends: 23669 [2020-10-29 14:44:08,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:44:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23669 states. [2020-10-29 14:44:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23669 to 16646. [2020-10-29 14:44:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16646 states. [2020-10-29 14:44:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16646 states to 16646 states and 28240 transitions. [2020-10-29 14:44:10,612 INFO L78 Accepts]: Start accepts. Automaton has 16646 states and 28240 transitions. Word has length 122 [2020-10-29 14:44:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:10,612 INFO L481 AbstractCegarLoop]: Abstraction has 16646 states and 28240 transitions. [2020-10-29 14:44:10,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 14:44:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 16646 states and 28240 transitions. [2020-10-29 14:44:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:44:10,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:10,661 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:10,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:44:10,662 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2027988138, now seen corresponding path program 1 times [2020-10-29 14:44:10,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:10,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592806055] [2020-10-29 14:44:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:15,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 14:44:15,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:44:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:44:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:15,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:44:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:44:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 14:44:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:15,857 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:15,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:15,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:15,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:44:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:44:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 14:44:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:16,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 14:44:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 14:44:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:16,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:16,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:44:16,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592806055] [2020-10-29 14:44:16,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:44:16,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 14:44:16,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516031238] [2020-10-29 14:44:16,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:44:16,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:44:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:44:16,061 INFO L87 Difference]: Start difference. First operand 16646 states and 28240 transitions. Second operand 8 states. [2020-10-29 14:44:16,385 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:19,226 INFO L93 Difference]: Finished difference Result 35293 states and 59880 transitions. [2020-10-29 14:44:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 14:44:19,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-29 14:44:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:19,344 INFO L225 Difference]: With dead ends: 35293 [2020-10-29 14:44:19,345 INFO L226 Difference]: Without dead ends: 18983 [2020-10-29 14:44:19,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-10-29 14:44:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18983 states. [2020-10-29 14:44:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18983 to 14294. [2020-10-29 14:44:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14294 states. [2020-10-29 14:44:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 23050 transitions. [2020-10-29 14:44:21,044 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 23050 transitions. Word has length 122 [2020-10-29 14:44:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:21,045 INFO L481 AbstractCegarLoop]: Abstraction has 14294 states and 23050 transitions. [2020-10-29 14:44:21,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:44:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 23050 transitions. [2020-10-29 14:44:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:44:21,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:21,082 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:21,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:44:21,083 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1829492727, now seen corresponding path program 1 times [2020-10-29 14:44:21,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:21,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718057659] [2020-10-29 14:44:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:44:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 14:44:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,283 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:44:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:26,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 14:44:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 14:44:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 14:44:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 14:44:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:44:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:26,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:44:26,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718057659] [2020-10-29 14:44:26,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:26,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 14:44:26,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729845049] [2020-10-29 14:44:26,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:44:26,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:26,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:44:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:44:26,534 INFO L87 Difference]: Start difference. First operand 14294 states and 23050 transitions. Second operand 9 states. [2020-10-29 14:44:26,886 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:30,378 INFO L93 Difference]: Finished difference Result 31557 states and 51048 transitions. [2020-10-29 14:44:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 14:44:30,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-10-29 14:44:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:30,506 INFO L225 Difference]: With dead ends: 31557 [2020-10-29 14:44:30,506 INFO L226 Difference]: Without dead ends: 17599 [2020-10-29 14:44:30,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:44:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17599 states. [2020-10-29 14:44:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17599 to 13806. [2020-10-29 14:44:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13806 states. [2020-10-29 14:44:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 21676 transitions. [2020-10-29 14:44:32,179 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 21676 transitions. Word has length 134 [2020-10-29 14:44:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:32,180 INFO L481 AbstractCegarLoop]: Abstraction has 13806 states and 21676 transitions. [2020-10-29 14:44:32,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:44:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 21676 transitions. [2020-10-29 14:44:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 14:44:32,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:32,206 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:32,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:44:32,207 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -25471985, now seen corresponding path program 1 times [2020-10-29 14:44:32,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:32,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027201693] [2020-10-29 14:44:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:44:37,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:44:37,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,385 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:37,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:37,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 14:44:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:37,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 14:44:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 14:44:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:37,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:37,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:44:37,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027201693] [2020-10-29 14:44:37,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:37,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:44:37,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74472913] [2020-10-29 14:44:37,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:44:37,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:44:37,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:44:37,595 INFO L87 Difference]: Start difference. First operand 13806 states and 21676 transitions. Second operand 8 states. [2020-10-29 14:44:37,766 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:44:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:41,992 INFO L93 Difference]: Finished difference Result 40370 states and 62774 transitions. [2020-10-29 14:44:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 14:44:41,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-29 14:44:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:42,122 INFO L225 Difference]: With dead ends: 40370 [2020-10-29 14:44:42,122 INFO L226 Difference]: Without dead ends: 26573 [2020-10-29 14:44:42,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-29 14:44:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26573 states. [2020-10-29 14:44:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26573 to 23247. [2020-10-29 14:44:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23247 states. [2020-10-29 14:44:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23247 states to 23247 states and 36141 transitions. [2020-10-29 14:44:44,450 INFO L78 Accepts]: Start accepts. Automaton has 23247 states and 36141 transitions. Word has length 124 [2020-10-29 14:44:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:44,451 INFO L481 AbstractCegarLoop]: Abstraction has 23247 states and 36141 transitions. [2020-10-29 14:44:44,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:44:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 23247 states and 36141 transitions. [2020-10-29 14:44:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:44:44,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:44,482 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:44,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:44:44,483 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash -777366591, now seen corresponding path program 1 times [2020-10-29 14:44:44,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:44,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571604767] [2020-10-29 14:44:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:44,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:44:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,666 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:44:49,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:44:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:44:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 14:44:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:44:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:44:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:44:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:44:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:44:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:44:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:44:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 14:44:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:44:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 14:44:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:49,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:44:49,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:44:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:44:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 14:44:49,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571604767] [2020-10-29 14:44:49,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:44:49,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 14:44:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117632927] [2020-10-29 14:44:49,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:44:49,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:44:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:44:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:44:49,899 INFO L87 Difference]: Start difference. First operand 23247 states and 36141 transitions. Second operand 9 states. [2020-10-29 14:44:50,065 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:44:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:44:54,167 INFO L93 Difference]: Finished difference Result 51186 states and 79818 transitions. [2020-10-29 14:44:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 14:44:54,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 133 [2020-10-29 14:44:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:44:54,317 INFO L225 Difference]: With dead ends: 51186 [2020-10-29 14:44:54,318 INFO L226 Difference]: Without dead ends: 27981 [2020-10-29 14:44:54,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-29 14:44:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27981 states. [2020-10-29 14:44:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27981 to 23247. [2020-10-29 14:44:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23247 states. [2020-10-29 14:44:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23247 states to 23247 states and 36065 transitions. [2020-10-29 14:44:57,155 INFO L78 Accepts]: Start accepts. Automaton has 23247 states and 36065 transitions. Word has length 133 [2020-10-29 14:44:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:44:57,156 INFO L481 AbstractCegarLoop]: Abstraction has 23247 states and 36065 transitions. [2020-10-29 14:44:57,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:44:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23247 states and 36065 transitions. [2020-10-29 14:44:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:44:57,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:44:57,178 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:44:57,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:44:57,178 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:44:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:44:57,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1784007299, now seen corresponding path program 1 times [2020-10-29 14:44:57,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:44:57,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576758244] [2020-10-29 14:44:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:44:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:44:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:44:58,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 14:45:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:45:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:45:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 14:45:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 14:45:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,362 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 14:45:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 14:45:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 14:45:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:45:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 14:45:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:02,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:02,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:02,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 14:45:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:02,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:02,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:02,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 14:45:02,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576758244] [2020-10-29 14:45:02,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:02,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 14:45:02,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034409061] [2020-10-29 14:45:02,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:45:02,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:02,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:45:02,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:45:02,615 INFO L87 Difference]: Start difference. First operand 23247 states and 36065 transitions. Second operand 10 states. [2020-10-29 14:45:02,785 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:06,579 INFO L93 Difference]: Finished difference Result 50190 states and 77680 transitions. [2020-10-29 14:45:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:45:06,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 133 [2020-10-29 14:45:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:06,680 INFO L225 Difference]: With dead ends: 50190 [2020-10-29 14:45:06,681 INFO L226 Difference]: Without dead ends: 26969 [2020-10-29 14:45:06,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-29 14:45:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26969 states. [2020-10-29 14:45:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26969 to 23023. [2020-10-29 14:45:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23023 states. [2020-10-29 14:45:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23023 states to 23023 states and 35622 transitions. [2020-10-29 14:45:09,389 INFO L78 Accepts]: Start accepts. Automaton has 23023 states and 35622 transitions. Word has length 133 [2020-10-29 14:45:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:09,389 INFO L481 AbstractCegarLoop]: Abstraction has 23023 states and 35622 transitions. [2020-10-29 14:45:09,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:45:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 23023 states and 35622 transitions. [2020-10-29 14:45:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:45:09,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:09,415 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:09,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:45:09,415 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash 626355721, now seen corresponding path program 1 times [2020-10-29 14:45:09,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:09,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641116974] [2020-10-29 14:45:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4115 [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 14:45:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:45:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:45:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,709 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 14:45:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:45:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 14:45:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:45:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:45:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 14:45:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:13,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:13,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 14:45:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 14:45:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:45:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 14:45:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:13,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:13,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:13,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 14:45:13,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641116974] [2020-10-29 14:45:13,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:13,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 14:45:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766436592] [2020-10-29 14:45:13,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:45:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:45:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:45:13,957 INFO L87 Difference]: Start difference. First operand 23023 states and 35622 transitions. Second operand 10 states. [2020-10-29 14:45:14,143 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:16,204 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:20,833 INFO L93 Difference]: Finished difference Result 54975 states and 86747 transitions. [2020-10-29 14:45:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 14:45:20,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 133 [2020-10-29 14:45:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:20,938 INFO L225 Difference]: With dead ends: 54975 [2020-10-29 14:45:20,938 INFO L226 Difference]: Without dead ends: 30679 [2020-10-29 14:45:21,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-10-29 14:45:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30679 states. [2020-10-29 14:45:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30679 to 27202. [2020-10-29 14:45:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27202 states. [2020-10-29 14:45:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27202 states to 27202 states and 41671 transitions. [2020-10-29 14:45:24,036 INFO L78 Accepts]: Start accepts. Automaton has 27202 states and 41671 transitions. Word has length 133 [2020-10-29 14:45:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:24,037 INFO L481 AbstractCegarLoop]: Abstraction has 27202 states and 41671 transitions. [2020-10-29 14:45:24,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:45:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 27202 states and 41671 transitions. [2020-10-29 14:45:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:45:24,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:24,071 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:24,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 14:45:24,071 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:24,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1015485175, now seen corresponding path program 1 times [2020-10-29 14:45:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:24,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248740572] [2020-10-29 14:45:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:24,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:45:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,268 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 14:45:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:45:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:45:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:45:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:45:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:45:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 14:45:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 14:45:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:45:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-29 14:45:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:29,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:29,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 14:45:29,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248740572] [2020-10-29 14:45:29,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:29,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 14:45:29,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250621434] [2020-10-29 14:45:29,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:45:29,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:45:29,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:45:29,695 INFO L87 Difference]: Start difference. First operand 27202 states and 41671 transitions. Second operand 10 states. [2020-10-29 14:45:29,871 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:45:30,694 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 14:45:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:45:38,030 INFO L93 Difference]: Finished difference Result 82146 states and 130185 transitions. [2020-10-29 14:45:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 14:45:38,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 159 [2020-10-29 14:45:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:45:38,257 INFO L225 Difference]: With dead ends: 82146 [2020-10-29 14:45:38,257 INFO L226 Difference]: Without dead ends: 54992 [2020-10-29 14:45:38,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2020-10-29 14:45:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54992 states. [2020-10-29 14:45:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54992 to 49272. [2020-10-29 14:45:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49272 states. [2020-10-29 14:45:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49272 states to 49272 states and 74561 transitions. [2020-10-29 14:45:43,516 INFO L78 Accepts]: Start accepts. Automaton has 49272 states and 74561 transitions. Word has length 159 [2020-10-29 14:45:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:45:43,516 INFO L481 AbstractCegarLoop]: Abstraction has 49272 states and 74561 transitions. [2020-10-29 14:45:43,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:45:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 49272 states and 74561 transitions. [2020-10-29 14:45:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 14:45:43,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:45:43,613 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:45:43,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 14:45:43,614 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:45:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:45:43,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1623130359, now seen corresponding path program 1 times [2020-10-29 14:45:43,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:45:43,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957570579] [2020-10-29 14:45:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:45:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 14:45:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 14:45:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:48,848 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 14:45:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:45:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:48,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 14:45:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 14:45:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:45:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:45:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 14:45:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:45:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:45:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:45:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 14:45:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 14:45:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:45:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-29 14:45:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:45:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:45:49,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:45:49,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:45:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:45:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 14:45:49,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957570579] [2020-10-29 14:45:49,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:45:49,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 14:45:49,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540973807] [2020-10-29 14:45:49,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:45:49,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:45:49,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:45:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:45:49,422 INFO L87 Difference]: Start difference. First operand 49272 states and 74561 transitions. Second operand 10 states. [2020-10-29 14:45:49,613 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:45:50,574 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 14:46:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:46:02,119 INFO L93 Difference]: Finished difference Result 129130 states and 199187 transitions. [2020-10-29 14:46:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 14:46:02,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 159 [2020-10-29 14:46:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted.