/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/forester-heap/sll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:13:49,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:13:49,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:13:49,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:13:49,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:13:49,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:13:49,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:13:49,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:13:49,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:13:49,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:13:49,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:13:49,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:13:49,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:13:49,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:13:49,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:13:49,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:13:49,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:13:49,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:13:49,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:13:49,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:13:49,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:13:49,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:13:49,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:13:49,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:13:49,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:13:49,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:13:49,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:13:49,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:13:49,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:13:49,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:13:49,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:13:49,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:13:49,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:13:49,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:13:49,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:13:49,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:13:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:13:49,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:13:49,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:13:49,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:13:49,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:13:49,320 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 09:13:49,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:13:49,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:13:49,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:13:49,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:13:49,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:13:49,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:13:49,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:13:49,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:13:49,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:13:49,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:13:49,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:13:49,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:13:49,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:13:49,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:13:49,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:13:49,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:13:49,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:13:49,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:13:49,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:13:49,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:13:49,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:13:49,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:13:49,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:13:49,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:13:49,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:13:49,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:13:49,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:13:49,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:13:49,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:13:49,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:13:49,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:13:49,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:13:49,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:13:49,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:13:49,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:13:49,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-29 09:13:49,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7571e9b63/b51b90f313c8468dab6f9f28f3d0b786/FLAG573acdcf1 [2020-10-29 09:13:50,548 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:13:50,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-29 09:13:50,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7571e9b63/b51b90f313c8468dab6f9f28f3d0b786/FLAG573acdcf1 [2020-10-29 09:13:50,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7571e9b63/b51b90f313c8468dab6f9f28f3d0b786 [2020-10-29 09:13:50,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:13:50,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:13:50,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:13:50,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:13:50,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:13:50,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:13:50" (1/1) ... [2020-10-29 09:13:50,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490ed2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:50, skipping insertion in model container [2020-10-29 09:13:50,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:13:50" (1/1) ... [2020-10-29 09:13:50,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:13:50,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:13:51,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:13:51,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:13:51,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:13:51,484 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:13:51,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51 WrapperNode [2020-10-29 09:13:51,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:13:51,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:13:51,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:13:51,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:13:51,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (1/1) ... [2020-10-29 09:13:51,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:13:51,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:13:51,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:13:51,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:13:51,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (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 09:13:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:13:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:13:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:13:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:13:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:13:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:13:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:13:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:13:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:13:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:13:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:13:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:13:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:13:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:13:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:13:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:13:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:13:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:13:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:13:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:13:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:13:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:13:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:13:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:13:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:13:52,370 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:13:52,371 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-29 09:13:52,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:13:52 BoogieIcfgContainer [2020-10-29 09:13:52,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:13:52,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:13:52,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:13:52,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:13:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:13:50" (1/3) ... [2020-10-29 09:13:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446c5ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:13:52, skipping insertion in model container [2020-10-29 09:13:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:13:51" (2/3) ... [2020-10-29 09:13:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446c5ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:13:52, skipping insertion in model container [2020-10-29 09:13:52,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:13:52" (3/3) ... [2020-10-29 09:13:52,384 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2020-10-29 09:13:52,398 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:13:52,404 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:13:52,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:13:52,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:13:52,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:13:52,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:13:52,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:13:52,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:13:52,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:13:52,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:13:52,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:13:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-29 09:13:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:13:52,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:52,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:52,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1889217750, now seen corresponding path program 1 times [2020-10-29 09:13:52,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:52,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232215085] [2020-10-29 09:13:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:52,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:53,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:53,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:13:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 09:13:53,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:53,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:13:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:13:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:13:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:53,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:53,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:13:53,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:53,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:53,176 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 09:13:53,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232215085] [2020-10-29 09:13:53,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:53,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:13:53,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343918274] [2020-10-29 09:13:53,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:13:53,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:53,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:13:53,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:13:53,203 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 5 states. [2020-10-29 09:13:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:53,535 INFO L93 Difference]: Finished difference Result 147 states and 257 transitions. [2020-10-29 09:13:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:13:53,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-29 09:13:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:53,547 INFO L225 Difference]: With dead ends: 147 [2020-10-29 09:13:53,548 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 09:13:53,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 09:13:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2020-10-29 09:13:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 09:13:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-29 09:13:53,603 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 12 [2020-10-29 09:13:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:53,603 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-29 09:13:53,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:13:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-29 09:13:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:13:53,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:53,605 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] [2020-10-29 09:13:53,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:13:53,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:53,607 INFO L82 PathProgramCache]: Analyzing trace with hash -825144030, now seen corresponding path program 1 times [2020-10-29 09:13:53,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:53,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180207679] [2020-10-29 09:13:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:13:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:13:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-29 09:13:54,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:54,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:13:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:13:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:54,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:54,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:13:54,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:54,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:54,392 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 09:13:54,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180207679] [2020-10-29 09:13:54,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:13:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995345788] [2020-10-29 09:13:54,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:13:54,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:13:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:54,396 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 6 states. [2020-10-29 09:13:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:54,681 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2020-10-29 09:13:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:13:54,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 09:13:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:54,684 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:13:54,684 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 09:13:54,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:13:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 09:13:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2020-10-29 09:13:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 09:13:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-10-29 09:13:54,700 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 23 [2020-10-29 09:13:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:54,700 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-10-29 09:13:54,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:13:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-10-29 09:13:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:13:54,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:54,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:13:54,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:13:54,703 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 945720343, now seen corresponding path program 1 times [2020-10-29 09:13:54,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:54,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508998464] [2020-10-29 09:13:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:54,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:13:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 09:13:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:54,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:13:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:13:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:54,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:54,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:54,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:13:54,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:54,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:54,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:13:54,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508998464] [2020-10-29 09:13:54,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:54,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:13:54,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56883320] [2020-10-29 09:13:54,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:13:54,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:54,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:13:54,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:13:54,981 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 6 states. [2020-10-29 09:13:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:55,231 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2020-10-29 09:13:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:13:55,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-29 09:13:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:55,232 INFO L225 Difference]: With dead ends: 105 [2020-10-29 09:13:55,233 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 09:13:55,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:13:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 09:13:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-10-29 09:13:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:13:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2020-10-29 09:13:55,244 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 26 [2020-10-29 09:13:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:55,244 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2020-10-29 09:13:55,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:13:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2020-10-29 09:13:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:13:55,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:55,246 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:13:55,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:13:55,246 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1389327989, now seen corresponding path program 1 times [2020-10-29 09:13:55,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:55,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154380689] [2020-10-29 09:13:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:55,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:13:55,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:13:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-29 09:13:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:55,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:13:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:13:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:55,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:55,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:55,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:13:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:55,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:55,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154380689] [2020-10-29 09:13:55,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:55,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:13:55,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701892482] [2020-10-29 09:13:55,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:13:55,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:13:55,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:13:55,921 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand 8 states. [2020-10-29 09:13:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:56,393 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2020-10-29 09:13:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:13:56,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:13:56,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:56,395 INFO L225 Difference]: With dead ends: 154 [2020-10-29 09:13:56,395 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 09:13:56,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:13:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 09:13:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 74. [2020-10-29 09:13:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 09:13:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-29 09:13:56,409 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 27 [2020-10-29 09:13:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:56,409 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-29 09:13:56,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:13:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-29 09:13:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:13:56,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:56,411 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:13:56,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:13:56,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 996300979, now seen corresponding path program 1 times [2020-10-29 09:13:56,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:56,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501386808] [2020-10-29 09:13:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:13:57,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:13:57,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-29 09:13:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:57,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:13:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:13:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:57,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:57,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:13:57,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:57,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:57,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501386808] [2020-10-29 09:13:57,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:57,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:13:57,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898624389] [2020-10-29 09:13:57,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:13:57,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:13:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:13:57,497 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 8 states. [2020-10-29 09:13:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:57,954 INFO L93 Difference]: Finished difference Result 160 states and 205 transitions. [2020-10-29 09:13:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:13:57,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-29 09:13:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:57,958 INFO L225 Difference]: With dead ends: 160 [2020-10-29 09:13:57,958 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 09:13:57,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:13:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 09:13:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 82. [2020-10-29 09:13:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 09:13:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2020-10-29 09:13:57,988 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 27 [2020-10-29 09:13:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:57,988 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2020-10-29 09:13:57,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:13:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2020-10-29 09:13:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:13:57,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:57,994 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:13:57,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:13:57,995 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:57,995 INFO L82 PathProgramCache]: Analyzing trace with hash -911494601, now seen corresponding path program 1 times [2020-10-29 09:13:57,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:57,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326131970] [2020-10-29 09:13:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:58,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:13:58,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:13:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:58,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:58,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:58,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:13:58,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:58,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:13:58,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326131970] [2020-10-29 09:13:58,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:13:58,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:13:58,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384585157] [2020-10-29 09:13:58,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:13:58,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:58,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:13:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:13:58,481 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand 9 states. [2020-10-29 09:13:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:13:59,185 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2020-10-29 09:13:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:13:59,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 09:13:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:13:59,191 INFO L225 Difference]: With dead ends: 144 [2020-10-29 09:13:59,192 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 09:13:59,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:13:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 09:13:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 88. [2020-10-29 09:13:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 09:13:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2020-10-29 09:13:59,213 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 27 [2020-10-29 09:13:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:13:59,214 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2020-10-29 09:13:59,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:13:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2020-10-29 09:13:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:13:59,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:13:59,216 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] [2020-10-29 09:13:59,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:13:59,216 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:13:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:13:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1034314442, now seen corresponding path program 1 times [2020-10-29 09:13:59,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:13:59,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030890973] [2020-10-29 09:13:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:13:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:59,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:13:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:13:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-29 09:13:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:59,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:13:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:13:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:13:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:13:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:13:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:13:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:13:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:13:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:13:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:13:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:13:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:13:59,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:13:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:13:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:13:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:13:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:13:59,666 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 09:13:59,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030890973] [2020-10-29 09:13:59,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:13:59,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:13:59,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908194103] [2020-10-29 09:13:59,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:13:59,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:13:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:13:59,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:13:59,670 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand 9 states. [2020-10-29 09:14:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:00,213 INFO L93 Difference]: Finished difference Result 152 states and 193 transitions. [2020-10-29 09:14:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:00,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-29 09:14:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:00,217 INFO L225 Difference]: With dead ends: 152 [2020-10-29 09:14:00,217 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 09:14:00,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 09:14:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 97. [2020-10-29 09:14:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:14:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-29 09:14:00,236 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 29 [2020-10-29 09:14:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:00,239 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-29 09:14:00,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-29 09:14:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:14:00,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:00,241 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] [2020-10-29 09:14:00,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:14:00,242 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1427341452, now seen corresponding path program 1 times [2020-10-29 09:14:00,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:00,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336870509] [2020-10-29 09:14:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:14:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2235 [2020-10-29 09:14:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:02,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:14:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:14:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:14:02,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:02,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:02,600 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 09:14:02,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336870509] [2020-10-29 09:14:02,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:02,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:14:02,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380185114] [2020-10-29 09:14:02,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:14:02,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:14:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:14:02,611 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 6 states. [2020-10-29 09:14:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:02,896 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2020-10-29 09:14:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:14:02,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 09:14:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:02,899 INFO L225 Difference]: With dead ends: 121 [2020-10-29 09:14:02,899 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:14:02,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:14:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-29 09:14:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:14:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2020-10-29 09:14:02,915 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 29 [2020-10-29 09:14:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:02,915 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2020-10-29 09:14:02,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:14:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2020-10-29 09:14:02,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:14:02,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:02,917 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] [2020-10-29 09:14:02,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:14:02,917 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:02,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1820793438, now seen corresponding path program 1 times [2020-10-29 09:14:02,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:02,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008049680] [2020-10-29 09:14:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:03,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:14:03,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-29 09:14:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:03,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:14:03,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:03,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:03,871 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 09:14:03,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008049680] [2020-10-29 09:14:03,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:14:03,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638578128] [2020-10-29 09:14:03,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:03,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:03,874 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand 9 states. [2020-10-29 09:14:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:04,454 INFO L93 Difference]: Finished difference Result 151 states and 190 transitions. [2020-10-29 09:14:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:04,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-29 09:14:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:04,457 INFO L225 Difference]: With dead ends: 151 [2020-10-29 09:14:04,457 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 09:14:04,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 09:14:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2020-10-29 09:14:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 09:14:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-29 09:14:04,483 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 30 [2020-10-29 09:14:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:04,484 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-29 09:14:04,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-29 09:14:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:14:04,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:04,495 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:04,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:14:04,495 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1583971812, now seen corresponding path program 1 times [2020-10-29 09:14:04,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:04,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235689819] [2020-10-29 09:14:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:05,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:14:05,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:14:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-29 09:14:05,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:14:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:05,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:05,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235689819] [2020-10-29 09:14:05,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:05,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:05,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749071121] [2020-10-29 09:14:05,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:05,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:05,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:05,511 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 9 states. [2020-10-29 09:14:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:06,042 INFO L93 Difference]: Finished difference Result 168 states and 211 transitions. [2020-10-29 09:14:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:06,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-29 09:14:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:06,044 INFO L225 Difference]: With dead ends: 168 [2020-10-29 09:14:06,044 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 09:14:06,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 09:14:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2020-10-29 09:14:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 09:14:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2020-10-29 09:14:06,057 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 30 [2020-10-29 09:14:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:06,058 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2020-10-29 09:14:06,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2020-10-29 09:14:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:14:06,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:06,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:06,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:14:06,060 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:06,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1190944802, now seen corresponding path program 1 times [2020-10-29 09:14:06,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:06,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599942381] [2020-10-29 09:14:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:14:06,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:14:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-10-29 09:14:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:06,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:14:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:06,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:06,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:06,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:06,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:06,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:06,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:06,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599942381] [2020-10-29 09:14:06,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:06,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:06,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320073945] [2020-10-29 09:14:06,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:06,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:07,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:07,002 INFO L87 Difference]: Start difference. First operand 102 states and 126 transitions. Second operand 9 states. [2020-10-29 09:14:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:07,546 INFO L93 Difference]: Finished difference Result 154 states and 190 transitions. [2020-10-29 09:14:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:07,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-29 09:14:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:07,548 INFO L225 Difference]: With dead ends: 154 [2020-10-29 09:14:07,548 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 09:14:07,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 09:14:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-10-29 09:14:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 09:14:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-10-29 09:14:07,560 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 30 [2020-10-29 09:14:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:07,560 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-10-29 09:14:07,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-10-29 09:14:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:07,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:07,562 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] [2020-10-29 09:14:07,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:14:07,562 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1807992789, now seen corresponding path program 1 times [2020-10-29 09:14:07,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:07,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564462859] [2020-10-29 09:14:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:08,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-29 09:14:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:08,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:08,308 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 09:14:08,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564462859] [2020-10-29 09:14:08,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:08,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:14:08,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478722684] [2020-10-29 09:14:08,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:08,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:08,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:08,310 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 9 states. [2020-10-29 09:14:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:08,686 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2020-10-29 09:14:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:08,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 09:14:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:08,690 INFO L225 Difference]: With dead ends: 178 [2020-10-29 09:14:08,691 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 09:14:08,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 09:14:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-10-29 09:14:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 09:14:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2020-10-29 09:14:08,701 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 31 [2020-10-29 09:14:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:08,701 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2020-10-29 09:14:08,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2020-10-29 09:14:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:08,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:08,702 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:08,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:14:08,703 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1694431754, now seen corresponding path program 1 times [2020-10-29 09:14:08,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893035594] [2020-10-29 09:14:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:09,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 09:14:09,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:14:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:09,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:09,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:09,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893035594] [2020-10-29 09:14:09,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:09,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:09,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067172869] [2020-10-29 09:14:09,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:09,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:09,228 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 10 states. [2020-10-29 09:14:09,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:09,789 INFO L93 Difference]: Finished difference Result 174 states and 223 transitions. [2020-10-29 09:14:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:09,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-29 09:14:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:09,793 INFO L225 Difference]: With dead ends: 174 [2020-10-29 09:14:09,793 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 09:14:09,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 09:14:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2020-10-29 09:14:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 09:14:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-10-29 09:14:09,805 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 31 [2020-10-29 09:14:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:09,805 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-10-29 09:14:09,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-10-29 09:14:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:09,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:09,806 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:09,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:14:09,806 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1301404744, now seen corresponding path program 1 times [2020-10-29 09:14:09,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:09,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291842473] [2020-10-29 09:14:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:10,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:10,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:14:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:14:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:10,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:10,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:14:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:10,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291842473] [2020-10-29 09:14:10,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:10,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:10,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572097432] [2020-10-29 09:14:10,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:10,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:10,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:10,744 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 9 states. [2020-10-29 09:14:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:11,133 INFO L93 Difference]: Finished difference Result 159 states and 204 transitions. [2020-10-29 09:14:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:11,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-29 09:14:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:11,135 INFO L225 Difference]: With dead ends: 159 [2020-10-29 09:14:11,135 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 09:14:11,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:11,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 09:14:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-10-29 09:14:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 09:14:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2020-10-29 09:14:11,149 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 31 [2020-10-29 09:14:11,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:11,149 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2020-10-29 09:14:11,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:11,150 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2020-10-29 09:14:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:14:11,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:11,151 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:11,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:14:11,152 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1475577036, now seen corresponding path program 2 times [2020-10-29 09:14:11,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:11,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969364955] [2020-10-29 09:14:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:11,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:14:11,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:11,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:11,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:11,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:11,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:11,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:11,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969364955] [2020-10-29 09:14:11,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:11,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:11,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933684864] [2020-10-29 09:14:11,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:11,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:11,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:11,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:11,675 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand 11 states. [2020-10-29 09:14:12,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:12,387 INFO L93 Difference]: Finished difference Result 167 states and 213 transitions. [2020-10-29 09:14:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:14:12,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 09:14:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:12,389 INFO L225 Difference]: With dead ends: 167 [2020-10-29 09:14:12,389 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 09:14:12,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 09:14:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 112. [2020-10-29 09:14:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 09:14:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2020-10-29 09:14:12,408 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 31 [2020-10-29 09:14:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:12,408 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2020-10-29 09:14:12,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2020-10-29 09:14:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:14:12,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:12,409 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:12,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:14:12,409 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1036867019, now seen corresponding path program 1 times [2020-10-29 09:14:12,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:12,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781390291] [2020-10-29 09:14:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:13,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:13,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:14:13,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:14:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:14,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:14,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:14,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781390291] [2020-10-29 09:14:14,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:14,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:14:14,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352559675] [2020-10-29 09:14:14,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:14:14,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:14:14,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:14,041 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand 8 states. [2020-10-29 09:14:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:14,448 INFO L93 Difference]: Finished difference Result 164 states and 209 transitions. [2020-10-29 09:14:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:14,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 09:14:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:14,450 INFO L225 Difference]: With dead ends: 164 [2020-10-29 09:14:14,450 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 09:14:14,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 09:14:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2020-10-29 09:14:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 09:14:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 152 transitions. [2020-10-29 09:14:14,464 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 152 transitions. Word has length 33 [2020-10-29 09:14:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:14,464 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 152 transitions. [2020-10-29 09:14:14,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:14:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 152 transitions. [2020-10-29 09:14:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:14:14,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:14,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:14,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:14:14,466 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:14,466 INFO L82 PathProgramCache]: Analyzing trace with hash 643840009, now seen corresponding path program 1 times [2020-10-29 09:14:14,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:14,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334007022] [2020-10-29 09:14:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:14,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:14,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:14,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:15,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:15,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:15,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334007022] [2020-10-29 09:14:15,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:15,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:15,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791496923] [2020-10-29 09:14:15,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:15,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:15,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:15,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:15,159 INFO L87 Difference]: Start difference. First operand 119 states and 152 transitions. Second operand 11 states. [2020-10-29 09:14:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:15,687 INFO L93 Difference]: Finished difference Result 171 states and 215 transitions. [2020-10-29 09:14:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:15,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 09:14:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:15,689 INFO L225 Difference]: With dead ends: 171 [2020-10-29 09:14:15,689 INFO L226 Difference]: Without dead ends: 167 [2020-10-29 09:14:15,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-29 09:14:15,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 128. [2020-10-29 09:14:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 09:14:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 163 transitions. [2020-10-29 09:14:15,717 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 163 transitions. Word has length 33 [2020-10-29 09:14:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:15,717 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 163 transitions. [2020-10-29 09:14:15,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 163 transitions. [2020-10-29 09:14:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:14:15,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:15,718 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:15,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:14:15,719 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1515530705, now seen corresponding path program 1 times [2020-10-29 09:14:15,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:15,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767245943] [2020-10-29 09:14:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:16,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:14:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-29 09:14:16,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:14:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:16,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:16,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767245943] [2020-10-29 09:14:16,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:16,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:16,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859765119] [2020-10-29 09:14:16,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:16,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:16,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:16,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:16,458 INFO L87 Difference]: Start difference. First operand 128 states and 163 transitions. Second operand 11 states. [2020-10-29 09:14:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:17,486 INFO L93 Difference]: Finished difference Result 190 states and 242 transitions. [2020-10-29 09:14:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:14:17,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 09:14:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:17,488 INFO L225 Difference]: With dead ends: 190 [2020-10-29 09:14:17,488 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 09:14:17,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 09:14:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 138. [2020-10-29 09:14:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 09:14:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2020-10-29 09:14:17,515 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 34 [2020-10-29 09:14:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:17,515 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2020-10-29 09:14:17,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2020-10-29 09:14:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:14:17,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:17,517 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:17,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:14:17,517 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:17,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1990993429, now seen corresponding path program 1 times [2020-10-29 09:14:17,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:17,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074446128] [2020-10-29 09:14:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:18,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:18,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:14:18,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-29 09:14:18,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:18,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:14:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:18,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:18,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074446128] [2020-10-29 09:14:18,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:18,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:18,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711232138] [2020-10-29 09:14:18,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:18,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:18,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:18,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:18,988 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand 11 states. [2020-10-29 09:14:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:19,811 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2020-10-29 09:14:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:14:19,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 09:14:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:19,813 INFO L225 Difference]: With dead ends: 180 [2020-10-29 09:14:19,813 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 09:14:19,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:14:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 09:14:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 141. [2020-10-29 09:14:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 09:14:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 180 transitions. [2020-10-29 09:14:19,830 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 180 transitions. Word has length 34 [2020-10-29 09:14:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:19,830 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 180 transitions. [2020-10-29 09:14:19,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 180 transitions. [2020-10-29 09:14:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:19,831 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 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 09:14:19,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:14:19,831 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash 317988957, now seen corresponding path program 2 times [2020-10-29 09:14:19,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:19,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910772818] [2020-10-29 09:14:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:20,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:20,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:20,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:20,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910772818] [2020-10-29 09:14:20,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:20,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:20,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781732260] [2020-10-29 09:14:20,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:20,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:20,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:20,706 INFO L87 Difference]: Start difference. First operand 141 states and 180 transitions. Second operand 11 states. [2020-10-29 09:14:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:21,348 INFO L93 Difference]: Finished difference Result 228 states and 294 transitions. [2020-10-29 09:14:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:21,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 09:14:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:21,351 INFO L225 Difference]: With dead ends: 228 [2020-10-29 09:14:21,351 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 09:14:21,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 09:14:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2020-10-29 09:14:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 09:14:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2020-10-29 09:14:21,373 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 35 [2020-10-29 09:14:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:21,373 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2020-10-29 09:14:21,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2020-10-29 09:14:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:21,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:21,375 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:21,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:14:21,375 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:21,375 INFO L82 PathProgramCache]: Analyzing trace with hash 285698622, now seen corresponding path program 1 times [2020-10-29 09:14:21,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:21,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434581254] [2020-10-29 09:14:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:22,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:22,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:22,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:22,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434581254] [2020-10-29 09:14:22,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:22,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:22,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830420338] [2020-10-29 09:14:22,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:22,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:22,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:22,458 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand 11 states. [2020-10-29 09:14:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:23,127 INFO L93 Difference]: Finished difference Result 209 states and 265 transitions. [2020-10-29 09:14:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:23,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-29 09:14:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:23,129 INFO L225 Difference]: With dead ends: 209 [2020-10-29 09:14:23,129 INFO L226 Difference]: Without dead ends: 196 [2020-10-29 09:14:23,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-29 09:14:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 169. [2020-10-29 09:14:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 09:14:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2020-10-29 09:14:23,163 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 35 [2020-10-29 09:14:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:23,165 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2020-10-29 09:14:23,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2020-10-29 09:14:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 09:14:23,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:23,166 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 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 09:14:23,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:14:23,166 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 255949343, now seen corresponding path program 3 times [2020-10-29 09:14:23,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:23,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920459968] [2020-10-29 09:14:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:23,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:23,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:14:23,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 09:14:23,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:23,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:24,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:24,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:24,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920459968] [2020-10-29 09:14:24,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:24,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:24,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43957643] [2020-10-29 09:14:24,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:24,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:24,122 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand 12 states. [2020-10-29 09:14:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:24,898 INFO L93 Difference]: Finished difference Result 216 states and 277 transitions. [2020-10-29 09:14:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:24,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-29 09:14:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:24,904 INFO L225 Difference]: With dead ends: 216 [2020-10-29 09:14:24,904 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 09:14:24,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 09:14:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-10-29 09:14:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 09:14:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2020-10-29 09:14:24,923 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 35 [2020-10-29 09:14:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:24,924 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2020-10-29 09:14:24,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2020-10-29 09:14:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:14:24,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:24,925 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:24,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:14:24,925 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2011429216, now seen corresponding path program 1 times [2020-10-29 09:14:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429014937] [2020-10-29 09:14:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:14:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:26,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:26,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:26,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429014937] [2020-10-29 09:14:26,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:26,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:26,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57987537] [2020-10-29 09:14:26,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:26,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:26,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:26,408 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand 11 states. [2020-10-29 09:14:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:26,941 INFO L93 Difference]: Finished difference Result 213 states and 266 transitions. [2020-10-29 09:14:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:26,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-29 09:14:26,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:26,943 INFO L225 Difference]: With dead ends: 213 [2020-10-29 09:14:26,943 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 09:14:26,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 09:14:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 170. [2020-10-29 09:14:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-29 09:14:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 217 transitions. [2020-10-29 09:14:26,963 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 217 transitions. Word has length 36 [2020-10-29 09:14:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:26,964 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 217 transitions. [2020-10-29 09:14:26,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 217 transitions. [2020-10-29 09:14:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:14:26,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:26,965 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:26,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:14:26,965 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:26,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1890511070, now seen corresponding path program 1 times [2020-10-29 09:14:26,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:26,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968475406] [2020-10-29 09:14:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:14:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:27,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:27,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:27,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:27,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:27,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:27,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:27,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968475406] [2020-10-29 09:14:27,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:27,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:14:27,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733360327] [2020-10-29 09:14:27,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:14:27,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:27,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:14:27,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:14:27,813 INFO L87 Difference]: Start difference. First operand 170 states and 217 transitions. Second operand 6 states. [2020-10-29 09:14:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:28,116 INFO L93 Difference]: Finished difference Result 225 states and 286 transitions. [2020-10-29 09:14:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:14:28,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 09:14:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:28,118 INFO L225 Difference]: With dead ends: 225 [2020-10-29 09:14:28,119 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 09:14:28,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:14:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 09:14:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 168. [2020-10-29 09:14:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-29 09:14:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2020-10-29 09:14:28,147 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 36 [2020-10-29 09:14:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:28,148 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2020-10-29 09:14:28,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:14:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2020-10-29 09:14:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:14:28,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:28,150 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:28,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:14:28,150 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:28,151 INFO L82 PathProgramCache]: Analyzing trace with hash 249860854, now seen corresponding path program 1 times [2020-10-29 09:14:28,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:28,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683774334] [2020-10-29 09:14:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:28,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:14:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:14:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:29,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:29,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683774334] [2020-10-29 09:14:29,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:29,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398446419] [2020-10-29 09:14:29,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:29,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:29,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:29,110 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand 12 states. [2020-10-29 09:14:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:29,851 INFO L93 Difference]: Finished difference Result 245 states and 310 transitions. [2020-10-29 09:14:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:14:29,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-29 09:14:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:29,853 INFO L225 Difference]: With dead ends: 245 [2020-10-29 09:14:29,853 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 09:14:29,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 09:14:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 187. [2020-10-29 09:14:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 09:14:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 237 transitions. [2020-10-29 09:14:29,875 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 237 transitions. Word has length 36 [2020-10-29 09:14:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:29,875 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 237 transitions. [2020-10-29 09:14:29,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 237 transitions. [2020-10-29 09:14:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:14:29,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:29,876 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:29,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:14:29,877 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash -143166156, now seen corresponding path program 1 times [2020-10-29 09:14:29,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:29,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953982384] [2020-10-29 09:14:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:33,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:33,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:14:33,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-29 09:14:33,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:33,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:14:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:14:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:34,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:34,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:34,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953982384] [2020-10-29 09:14:34,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:34,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:14:34,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871689161] [2020-10-29 09:14:34,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:14:34,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:34,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:14:34,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:14:34,044 INFO L87 Difference]: Start difference. First operand 187 states and 237 transitions. Second operand 9 states. [2020-10-29 09:14:34,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:34,498 INFO L93 Difference]: Finished difference Result 216 states and 272 transitions. [2020-10-29 09:14:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:34,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-29 09:14:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:34,500 INFO L225 Difference]: With dead ends: 216 [2020-10-29 09:14:34,500 INFO L226 Difference]: Without dead ends: 190 [2020-10-29 09:14:34,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-29 09:14:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-29 09:14:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-29 09:14:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2020-10-29 09:14:34,520 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 240 transitions. Word has length 36 [2020-10-29 09:14:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:34,521 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 240 transitions. [2020-10-29 09:14:34,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:14:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 240 transitions. [2020-10-29 09:14:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:34,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:34,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:34,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:14:34,522 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2060301334, now seen corresponding path program 2 times [2020-10-29 09:14:34,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:34,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705625285] [2020-10-29 09:14:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:36,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:36,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1587 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:14:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:36,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:36,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:36,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705625285] [2020-10-29 09:14:36,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:36,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:36,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649746648] [2020-10-29 09:14:36,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:36,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:36,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:36,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:36,365 INFO L87 Difference]: Start difference. First operand 190 states and 240 transitions. Second operand 10 states. [2020-10-29 09:14:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:37,110 INFO L93 Difference]: Finished difference Result 252 states and 316 transitions. [2020-10-29 09:14:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:37,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-29 09:14:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:37,112 INFO L225 Difference]: With dead ends: 252 [2020-10-29 09:14:37,112 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 09:14:37,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 09:14:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 189. [2020-10-29 09:14:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 09:14:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 238 transitions. [2020-10-29 09:14:37,133 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 238 transitions. Word has length 37 [2020-10-29 09:14:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:37,134 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 238 transitions. [2020-10-29 09:14:37,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:14:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 238 transitions. [2020-10-29 09:14:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:37,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:37,135 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:37,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:14:37,135 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:37,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1319445346, now seen corresponding path program 1 times [2020-10-29 09:14:37,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:37,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131289305] [2020-10-29 09:14:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:37,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:14:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:38,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:38,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:38,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:14:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:38,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:38,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131289305] [2020-10-29 09:14:38,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:38,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:38,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885505138] [2020-10-29 09:14:38,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:38,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:38,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:38,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:38,332 INFO L87 Difference]: Start difference. First operand 189 states and 238 transitions. Second operand 12 states. [2020-10-29 09:14:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:39,202 INFO L93 Difference]: Finished difference Result 246 states and 309 transitions. [2020-10-29 09:14:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:39,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-29 09:14:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:39,204 INFO L225 Difference]: With dead ends: 246 [2020-10-29 09:14:39,205 INFO L226 Difference]: Without dead ends: 234 [2020-10-29 09:14:39,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:14:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-29 09:14:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 189. [2020-10-29 09:14:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 09:14:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 237 transitions. [2020-10-29 09:14:39,230 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 237 transitions. Word has length 37 [2020-10-29 09:14:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:39,230 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 237 transitions. [2020-10-29 09:14:39,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 237 transitions. [2020-10-29 09:14:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:14:39,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:39,232 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:39,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:14:39,232 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1241712350, now seen corresponding path program 2 times [2020-10-29 09:14:39,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:39,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081237226] [2020-10-29 09:14:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:39,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:14:39,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:39,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:39,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:39,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081237226] [2020-10-29 09:14:39,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:39,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:39,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034747951] [2020-10-29 09:14:39,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:39,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:39,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:39,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:39,945 INFO L87 Difference]: Start difference. First operand 189 states and 237 transitions. Second operand 11 states. [2020-10-29 09:14:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:40,474 INFO L93 Difference]: Finished difference Result 217 states and 270 transitions. [2020-10-29 09:14:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:40,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-29 09:14:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:40,477 INFO L225 Difference]: With dead ends: 217 [2020-10-29 09:14:40,477 INFO L226 Difference]: Without dead ends: 213 [2020-10-29 09:14:40,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-29 09:14:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 187. [2020-10-29 09:14:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 09:14:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2020-10-29 09:14:40,503 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 37 [2020-10-29 09:14:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:40,503 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2020-10-29 09:14:40,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2020-10-29 09:14:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:40,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:40,504 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:40,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:14:40,505 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1224846076, now seen corresponding path program 3 times [2020-10-29 09:14:40,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:40,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882371102] [2020-10-29 09:14:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:40,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:41,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:41,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:41,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:14:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:41,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882371102] [2020-10-29 09:14:41,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:41,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:41,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997021415] [2020-10-29 09:14:41,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:41,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:41,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:41,405 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand 12 states. [2020-10-29 09:14:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:42,278 INFO L93 Difference]: Finished difference Result 304 states and 381 transitions. [2020-10-29 09:14:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:42,280 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-29 09:14:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:42,281 INFO L225 Difference]: With dead ends: 304 [2020-10-29 09:14:42,281 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 09:14:42,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:14:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 09:14:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 217. [2020-10-29 09:14:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-29 09:14:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2020-10-29 09:14:42,307 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 38 [2020-10-29 09:14:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:42,308 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2020-10-29 09:14:42,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2020-10-29 09:14:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:42,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:42,309 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:42,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:14:42,309 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 831819066, now seen corresponding path program 1 times [2020-10-29 09:14:42,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:42,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665837491] [2020-10-29 09:14:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:42,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:14:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-29 09:14:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 09:14:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:43,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:43,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:43,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:43,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665837491] [2020-10-29 09:14:43,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:43,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507536925] [2020-10-29 09:14:43,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:43,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:43,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:43,517 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand 11 states. [2020-10-29 09:14:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:44,179 INFO L93 Difference]: Finished difference Result 275 states and 344 transitions. [2020-10-29 09:14:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:14:44,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 09:14:44,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:44,181 INFO L225 Difference]: With dead ends: 275 [2020-10-29 09:14:44,181 INFO L226 Difference]: Without dead ends: 220 [2020-10-29 09:14:44,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-29 09:14:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2020-10-29 09:14:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-29 09:14:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2020-10-29 09:14:44,211 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 38 [2020-10-29 09:14:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:44,212 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2020-10-29 09:14:44,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2020-10-29 09:14:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:44,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:44,213 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:44,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 09:14:44,214 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1084297466, now seen corresponding path program 4 times [2020-10-29 09:14:44,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:44,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550132659] [2020-10-29 09:14:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:44,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:44,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:14:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:45,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:45,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:45,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:45,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550132659] [2020-10-29 09:14:45,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:45,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:45,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878309853] [2020-10-29 09:14:45,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:45,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:45,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:45,116 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand 13 states. [2020-10-29 09:14:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:46,323 INFO L93 Difference]: Finished difference Result 310 states and 386 transitions. [2020-10-29 09:14:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:14:46,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-29 09:14:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:46,326 INFO L225 Difference]: With dead ends: 310 [2020-10-29 09:14:46,326 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 09:14:46,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:14:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 09:14:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 241. [2020-10-29 09:14:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 09:14:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 301 transitions. [2020-10-29 09:14:46,356 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 301 transitions. Word has length 38 [2020-10-29 09:14:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:46,356 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 301 transitions. [2020-10-29 09:14:46,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 301 transitions. [2020-10-29 09:14:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:46,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:46,358 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:46,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 09:14:46,358 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:46,358 INFO L82 PathProgramCache]: Analyzing trace with hash -371147285, now seen corresponding path program 1 times [2020-10-29 09:14:46,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:46,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152636790] [2020-10-29 09:14:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 09:14:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:47,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:47,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:47,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152636790] [2020-10-29 09:14:47,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:47,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:14:47,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951803333] [2020-10-29 09:14:47,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:14:47,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:47,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:14:47,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:14:47,604 INFO L87 Difference]: Start difference. First operand 241 states and 301 transitions. Second operand 12 states. [2020-10-29 09:14:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:48,342 INFO L93 Difference]: Finished difference Result 291 states and 363 transitions. [2020-10-29 09:14:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:14:48,343 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-29 09:14:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:48,344 INFO L225 Difference]: With dead ends: 291 [2020-10-29 09:14:48,345 INFO L226 Difference]: Without dead ends: 287 [2020-10-29 09:14:48,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-29 09:14:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 235. [2020-10-29 09:14:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-29 09:14:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2020-10-29 09:14:48,372 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 38 [2020-10-29 09:14:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:48,372 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2020-10-29 09:14:48,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:14:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2020-10-29 09:14:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:14:48,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:48,374 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 09:14:48,374 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash -636820042, now seen corresponding path program 2 times [2020-10-29 09:14:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836443685] [2020-10-29 09:14:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:49,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:49,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:14:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:49,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836443685] [2020-10-29 09:14:49,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:49,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:49,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299028696] [2020-10-29 09:14:49,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:49,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:49,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:49,808 INFO L87 Difference]: Start difference. First operand 235 states and 295 transitions. Second operand 11 states. [2020-10-29 09:14:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:50,468 INFO L93 Difference]: Finished difference Result 270 states and 335 transitions. [2020-10-29 09:14:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:14:50,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-29 09:14:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:50,470 INFO L225 Difference]: With dead ends: 270 [2020-10-29 09:14:50,471 INFO L226 Difference]: Without dead ends: 260 [2020-10-29 09:14:50,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:14:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-29 09:14:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 223. [2020-10-29 09:14:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-29 09:14:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 281 transitions. [2020-10-29 09:14:50,498 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 281 transitions. Word has length 38 [2020-10-29 09:14:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:50,498 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 281 transitions. [2020-10-29 09:14:50,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 281 transitions. [2020-10-29 09:14:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:14:50,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:50,499 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:50,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 09:14:50,500 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2143124991, now seen corresponding path program 1 times [2020-10-29 09:14:50,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:50,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223381968] [2020-10-29 09:14:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:14:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:51,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:51,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223381968] [2020-10-29 09:14:51,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:51,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:51,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238728130] [2020-10-29 09:14:51,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:51,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:51,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:51,445 INFO L87 Difference]: Start difference. First operand 223 states and 281 transitions. Second operand 13 states. [2020-10-29 09:14:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:52,285 INFO L93 Difference]: Finished difference Result 295 states and 369 transitions. [2020-10-29 09:14:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:52,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-29 09:14:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:52,287 INFO L225 Difference]: With dead ends: 295 [2020-10-29 09:14:52,287 INFO L226 Difference]: Without dead ends: 291 [2020-10-29 09:14:52,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-29 09:14:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 229. [2020-10-29 09:14:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 09:14:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 288 transitions. [2020-10-29 09:14:52,322 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 288 transitions. Word has length 40 [2020-10-29 09:14:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:52,323 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 288 transitions. [2020-10-29 09:14:52,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 288 transitions. [2020-10-29 09:14:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:14:52,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:52,324 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:52,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 09:14:52,325 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 483964986, now seen corresponding path program 1 times [2020-10-29 09:14:52,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:52,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771297136] [2020-10-29 09:14:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:14:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:14:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:52,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:52,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771297136] [2020-10-29 09:14:52,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:52,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:14:52,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68551052] [2020-10-29 09:14:52,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:14:52,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:14:52,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:14:52,922 INFO L87 Difference]: Start difference. First operand 229 states and 288 transitions. Second operand 11 states. [2020-10-29 09:14:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:53,953 INFO L93 Difference]: Finished difference Result 298 states and 371 transitions. [2020-10-29 09:14:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:14:53,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-29 09:14:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:53,957 INFO L225 Difference]: With dead ends: 298 [2020-10-29 09:14:53,957 INFO L226 Difference]: Without dead ends: 262 [2020-10-29 09:14:53,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:14:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-29 09:14:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 243. [2020-10-29 09:14:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 09:14:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 306 transitions. [2020-10-29 09:14:53,984 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 306 transitions. Word has length 40 [2020-10-29 09:14:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:53,985 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 306 transitions. [2020-10-29 09:14:53,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:14:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 306 transitions. [2020-10-29 09:14:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:53,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:53,986 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:14:53,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 09:14:53,987 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2060986365, now seen corresponding path program 5 times [2020-10-29 09:14:53,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:53,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961629450] [2020-10-29 09:14:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:14:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:54,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:54,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961629450] [2020-10-29 09:14:54,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:54,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:54,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607005689] [2020-10-29 09:14:54,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:54,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:54,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:54,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:54,881 INFO L87 Difference]: Start difference. First operand 243 states and 306 transitions. Second operand 13 states. [2020-10-29 09:14:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:56,333 INFO L93 Difference]: Finished difference Result 320 states and 402 transitions. [2020-10-29 09:14:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:14:56,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 09:14:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:56,336 INFO L225 Difference]: With dead ends: 320 [2020-10-29 09:14:56,336 INFO L226 Difference]: Without dead ends: 316 [2020-10-29 09:14:56,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:14:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-29 09:14:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 264. [2020-10-29 09:14:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-29 09:14:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 336 transitions. [2020-10-29 09:14:56,371 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 336 transitions. Word has length 41 [2020-10-29 09:14:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:56,372 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 336 transitions. [2020-10-29 09:14:56,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 336 transitions. [2020-10-29 09:14:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:56,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:56,373 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 09:14:56,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 09:14:56,373 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1807404787, now seen corresponding path program 1 times [2020-10-29 09:14:56,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:56,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615284344] [2020-10-29 09:14:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:56,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:57,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:57,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:14:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:14:58,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615284344] [2020-10-29 09:14:58,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:58,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:14:58,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687831984] [2020-10-29 09:14:58,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:14:58,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:58,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:14:58,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:14:58,108 INFO L87 Difference]: Start difference. First operand 264 states and 336 transitions. Second operand 13 states. [2020-10-29 09:14:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:59,077 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2020-10-29 09:14:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:14:59,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 09:14:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:59,080 INFO L225 Difference]: With dead ends: 329 [2020-10-29 09:14:59,080 INFO L226 Difference]: Without dead ends: 325 [2020-10-29 09:14:59,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:14:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-29 09:14:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 267. [2020-10-29 09:14:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-29 09:14:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2020-10-29 09:14:59,113 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 41 [2020-10-29 09:14:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:59,114 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2020-10-29 09:14:59,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:14:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2020-10-29 09:14:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:14:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:59,115 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 09:14:59,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 09:14:59,115 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:59,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1384077270, now seen corresponding path program 1 times [2020-10-29 09:14:59,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:59,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974018493] [2020-10-29 09:14:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:59,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:59,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:14:59,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:14:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:59,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:59,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:59,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:59,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:14:59,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974018493] [2020-10-29 09:14:59,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:14:59,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:14:59,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337852859] [2020-10-29 09:14:59,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:14:59,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:14:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:14:59,227 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand 4 states. [2020-10-29 09:14:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:14:59,386 INFO L93 Difference]: Finished difference Result 439 states and 555 transitions. [2020-10-29 09:14:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:14:59,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-29 09:14:59,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:14:59,388 INFO L225 Difference]: With dead ends: 439 [2020-10-29 09:14:59,388 INFO L226 Difference]: Without dead ends: 240 [2020-10-29 09:14:59,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:14:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-29 09:14:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2020-10-29 09:14:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-29 09:14:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2020-10-29 09:14:59,417 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 41 [2020-10-29 09:14:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:14:59,417 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2020-10-29 09:14:59,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:14:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2020-10-29 09:14:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:14:59,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:14:59,419 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:14:59,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 09:14:59,419 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:14:59,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:14:59,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1819325621, now seen corresponding path program 1 times [2020-10-29 09:14:59,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:14:59,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900431940] [2020-10-29 09:14:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:14:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:14:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:14:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:14:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:14:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:14:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:14:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:14:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:14:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:14:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:14:59,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900431940] [2020-10-29 09:14:59,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:14:59,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:14:59,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258767336] [2020-10-29 09:14:59,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:14:59,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:14:59,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:14:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:14:59,783 INFO L87 Difference]: Start difference. First operand 239 states and 293 transitions. Second operand 10 states. [2020-10-29 09:15:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:00,444 INFO L93 Difference]: Finished difference Result 312 states and 383 transitions. [2020-10-29 09:15:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:15:00,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 09:15:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:00,447 INFO L225 Difference]: With dead ends: 312 [2020-10-29 09:15:00,447 INFO L226 Difference]: Without dead ends: 289 [2020-10-29 09:15:00,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:15:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-29 09:15:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-10-29 09:15:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-29 09:15:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 307 transitions. [2020-10-29 09:15:00,480 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 307 transitions. Word has length 42 [2020-10-29 09:15:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:00,480 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 307 transitions. [2020-10-29 09:15:00,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:15:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 307 transitions. [2020-10-29 09:15:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:15:00,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:00,481 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:00,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 09:15:00,481 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:00,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:00,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2144312884, now seen corresponding path program 1 times [2020-10-29 09:15:00,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:00,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800479604] [2020-10-29 09:15:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:01,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:15:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:02,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:02,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:02,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:02,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:02,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800479604] [2020-10-29 09:15:02,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:02,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:02,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137945270] [2020-10-29 09:15:02,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:02,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:02,321 INFO L87 Difference]: Start difference. First operand 252 states and 307 transitions. Second operand 13 states. [2020-10-29 09:15:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:03,187 INFO L93 Difference]: Finished difference Result 316 states and 386 transitions. [2020-10-29 09:15:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:15:03,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-29 09:15:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:03,189 INFO L225 Difference]: With dead ends: 316 [2020-10-29 09:15:03,189 INFO L226 Difference]: Without dead ends: 303 [2020-10-29 09:15:03,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:15:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-29 09:15:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 252. [2020-10-29 09:15:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-29 09:15:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 307 transitions. [2020-10-29 09:15:03,216 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 307 transitions. Word has length 42 [2020-10-29 09:15:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:03,217 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 307 transitions. [2020-10-29 09:15:03,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 307 transitions. [2020-10-29 09:15:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:15:03,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:03,218 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:03,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 09:15:03,218 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:03,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1318619581, now seen corresponding path program 1 times [2020-10-29 09:15:03,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:03,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341341296] [2020-10-29 09:15:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:15:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:15:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:15:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341341296] [2020-10-29 09:15:04,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:04,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:15:04,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261472409] [2020-10-29 09:15:04,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:15:04,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:15:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:15:04,012 INFO L87 Difference]: Start difference. First operand 252 states and 307 transitions. Second operand 11 states. [2020-10-29 09:15:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:04,552 INFO L93 Difference]: Finished difference Result 386 states and 477 transitions. [2020-10-29 09:15:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:15:04,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-29 09:15:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:04,554 INFO L225 Difference]: With dead ends: 386 [2020-10-29 09:15:04,554 INFO L226 Difference]: Without dead ends: 282 [2020-10-29 09:15:04,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-29 09:15:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 249. [2020-10-29 09:15:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 09:15:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 300 transitions. [2020-10-29 09:15:04,585 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 300 transitions. Word has length 42 [2020-10-29 09:15:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:04,585 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 300 transitions. [2020-10-29 09:15:04,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:15:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 300 transitions. [2020-10-29 09:15:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:15:04,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:04,586 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:15:04,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 09:15:04,587 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:04,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:04,587 INFO L82 PathProgramCache]: Analyzing trace with hash 659977859, now seen corresponding path program 1 times [2020-10-29 09:15:04,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:04,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631705338] [2020-10-29 09:15:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:05,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:15:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:05,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631705338] [2020-10-29 09:15:05,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:05,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:15:05,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202648665] [2020-10-29 09:15:05,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:15:05,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:15:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:15:05,601 INFO L87 Difference]: Start difference. First operand 249 states and 300 transitions. Second operand 14 states. [2020-10-29 09:15:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:06,691 INFO L93 Difference]: Finished difference Result 310 states and 380 transitions. [2020-10-29 09:15:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:15:06,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-29 09:15:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:06,693 INFO L225 Difference]: With dead ends: 310 [2020-10-29 09:15:06,693 INFO L226 Difference]: Without dead ends: 306 [2020-10-29 09:15:06,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:15:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-29 09:15:06,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 266. [2020-10-29 09:15:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-29 09:15:06,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 322 transitions. [2020-10-29 09:15:06,726 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 322 transitions. Word has length 42 [2020-10-29 09:15:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:06,726 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 322 transitions. [2020-10-29 09:15:06,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:15:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 322 transitions. [2020-10-29 09:15:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:15:06,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:06,727 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 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] [2020-10-29 09:15:06,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 09:15:06,728 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2068813507, now seen corresponding path program 2 times [2020-10-29 09:15:06,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:06,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326995201] [2020-10-29 09:15:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:07,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:15:07,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:15:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:15:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:15:07,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:15:07,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:15:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:15:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:15:07,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326995201] [2020-10-29 09:15:07,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:15:07,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:15:07,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454634100] [2020-10-29 09:15:07,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:15:07,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:15:07,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:15:07,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:15:07,673 INFO L87 Difference]: Start difference. First operand 266 states and 322 transitions. Second operand 13 states. [2020-10-29 09:15:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:15:08,423 INFO L93 Difference]: Finished difference Result 358 states and 434 transitions. [2020-10-29 09:15:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:15:08,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-29 09:15:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:15:08,431 INFO L225 Difference]: With dead ends: 358 [2020-10-29 09:15:08,431 INFO L226 Difference]: Without dead ends: 298 [2020-10-29 09:15:08,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:15:08,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-29 09:15:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 263. [2020-10-29 09:15:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 09:15:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 316 transitions. [2020-10-29 09:15:08,463 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 316 transitions. Word has length 42 [2020-10-29 09:15:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:15:08,463 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 316 transitions. [2020-10-29 09:15:08,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:15:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 316 transitions. [2020-10-29 09:15:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:15:08,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:15:08,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:15:08,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 09:15:08,465 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:15:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:15:08,466 INFO L82 PathProgramCache]: Analyzing trace with hash 89322175, now seen corresponding path program 1 times [2020-10-29 09:15:08,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:15:08,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81801550] [2020-10-29 09:15:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:15:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:15:08,486 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:15:08,486 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:15:08,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 09:15:08,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:15:08 BoogieIcfgContainer [2020-10-29 09:15:08,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:15:08,513 INFO L168 Benchmark]: Toolchain (without parser) took 77636.68 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 124.8 MB in the beginning and 324.1 MB in the end (delta: -199.2 MB). Peak memory consumption was 304.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:15:08,513 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:15:08,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:15:08,514 INFO L168 Benchmark]: Boogie Preprocessor took 97.97 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 132.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:15:08,514 INFO L168 Benchmark]: RCFGBuilder took 788.96 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 83.4 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:15:08,515 INFO L168 Benchmark]: TraceAbstraction took 76135.47 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 82.8 MB in the beginning and 324.1 MB in the end (delta: -241.3 MB). Peak memory consumption was 261.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:15:08,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 598.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.97 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 132.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.96 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 83.4 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76135.47 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 82.8 MB in the beginning and 324.1 MB in the end (delta: -241.3 MB). Peak memory consumption was 261.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int marked = 0; [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND TRUE __VERIFIER_nondet_int() [L1013] marked = 1 [L1016] COND TRUE \read(marked) [L1017] x->data = 1 [L1004] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1025] marked = 0 [L1027] EXPR x->next [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] EXPR x->next [L1027] EXPR x->next->data [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1032] EXPR x->next [L1032] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1032] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1032] COND FALSE !(x->next != ((void*)0) && __VERIFIER_nondet_int()) [L1038] SLL* tmp = malloc(sizeof(SLL)); [L1039] tmp->data = 1 [L1040] tmp->next = ((void*)0) [L1041] EXPR x->next [L1041] COND FALSE !(x->next == ((void*)0)) [L1045] EXPR x->next [L1045] tmp->next = x->next [L1046] x->next = tmp [L1049] marked = 0 [L1050] x = head [L1052] x != ((void*)0) && x->data != 1 [L1052] EXPR x->data [L1052] x != ((void*)0) && x->data != 1 [L1052] COND TRUE x != ((void*)0) && x->data != 1 [L1054] EXPR x->data [L1054] marked = x->data [L1055] EXPR x->data [L1055] COND FALSE !(!(x->data == 0)) [L1056] COND FALSE !(!(marked == 0)) [L1057] EXPR x->next [L1057] x = x->next [L1052] x != ((void*)0) && x->data != 1 [L1052] EXPR x->data [L1052] x != ((void*)0) && x->data != 1 [L1052] COND FALSE !(x != ((void*)0) && x->data != 1) [L1059] COND TRUE x != ((void*)0) [L1061] EXPR x->data [L1061] marked = x->data [L1062] EXPR x->data [L1062] COND TRUE !(x->data != 1) [L1062] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.0s, OverallIterations: 45, TraceHistogramMax: 5, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2488 SDtfs, 4440 SDslu, 12567 SDs, 0 SdLazy, 15376 SolverSat, 1429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 697 GetRequests, 145 SyntacticMatches, 13 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 44 MinimizatonAttempts, 1485 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 44.6s InterpolantComputationTime, 1554 NumberOfCodeBlocks, 1554 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1467 ConstructedInterpolants, 0 QuantifiedInterpolants, 937297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 9 PerfectInterpolantSequences, 51/429 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...