./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 462c34e9f51057faedad8f148a3437a4550c80b7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:26:10,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:10,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:11,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:11,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:11,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:11,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:11,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:11,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:11,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:11,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:11,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:11,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:11,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:11,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:11,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:11,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:11,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:11,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:11,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:11,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:11,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:11,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:11,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:11,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:11,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:11,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:11,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:11,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:11,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:11,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:11,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:11,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:11,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:11,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:11,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:11,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:11,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:11,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:11,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:11,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:11,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:26:11,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:11,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:11,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:11,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:11,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:11,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:11,109 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:11,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:11,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:11,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:11,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:11,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:11,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:11,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:11,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:11,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:11,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:11,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:11,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:11,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:26:11,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:26:11,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:11,113 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462c34e9f51057faedad8f148a3437a4550c80b7 [2021-08-27 04:26:11,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:11,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:11,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:11,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:11,379 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:11,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2021-08-27 04:26:11,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5fe2780/029d6d06c4f542c7b49ee4d3c9d458df/FLAGa17cac475 [2021-08-27 04:26:11,810 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:11,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2021-08-27 04:26:11,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5fe2780/029d6d06c4f542c7b49ee4d3c9d458df/FLAGa17cac475 [2021-08-27 04:26:11,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a5fe2780/029d6d06c4f542c7b49ee4d3c9d458df [2021-08-27 04:26:11,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:11,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:11,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:11,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:11,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:11,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:11" (1/1) ... [2021-08-27 04:26:11,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbe336c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:11, skipping insertion in model container [2021-08-27 04:26:11,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:11" (1/1) ... [2021-08-27 04:26:11,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:11,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:12,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2021-08-27 04:26:12,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:12,161 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:26:12,192 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2021-08-27 04:26:12,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:12,214 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:26:12,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12 WrapperNode [2021-08-27 04:26:12,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:12,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:26:12,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:26:12,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:26:12,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:26:12,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:26:12,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:26:12,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:26:12,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:12,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:12,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:26:12,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:26:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:26:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:26:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:26:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:26:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:26:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:26:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:26:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:26:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:26:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:26:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:26:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:26:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:26:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:26:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:26:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:26:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:26:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:26:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:26:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:26:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:26:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:26:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:26:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:26:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:26:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:26:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:26:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:26:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:26:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:26:12,359 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:26:12,360 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:26:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:26:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:26:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:26:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:26:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:26:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:26:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:26:12,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:26:12,944 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-27 04:26:12,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:12 BoogieIcfgContainer [2021-08-27 04:26:12,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:26:12,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:26:12,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:26:12,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:26:12,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:26:11" (1/3) ... [2021-08-27 04:26:12,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:12, skipping insertion in model container [2021-08-27 04:26:12,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (2/3) ... [2021-08-27 04:26:12,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:12, skipping insertion in model container [2021-08-27 04:26:12,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:12" (3/3) ... [2021-08-27 04:26:12,951 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2021-08-27 04:26:12,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:26:12,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-08-27 04:26:13,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:26:13,007 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:26:13,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-08-27 04:26:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 127 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:26:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 04:26:13,030 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:13,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:13,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1992649790, now seen corresponding path program 1 times [2021-08-27 04:26:13,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:13,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943293110] [2021-08-27 04:26:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:13,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:13,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:13,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943293110] [2021-08-27 04:26:13,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943293110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:13,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:13,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:13,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867004545] [2021-08-27 04:26:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:13,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,221 INFO L87 Difference]: Start difference. First operand has 132 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 127 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:13,474 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-08-27 04:26:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:13,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 04:26:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:13,483 INFO L225 Difference]: With dead ends: 158 [2021-08-27 04:26:13,483 INFO L226 Difference]: Without dead ends: 154 [2021-08-27 04:26:13,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-27 04:26:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2021-08-27 04:26:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 64 states have (on average 2.015625) internal successors, (129), 121 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-08-27 04:26:13,509 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 7 [2021-08-27 04:26:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:13,509 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-08-27 04:26:13,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-08-27 04:26:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 04:26:13,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:13,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:13,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:26:13,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1992649789, now seen corresponding path program 1 times [2021-08-27 04:26:13,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:13,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216340796] [2021-08-27 04:26:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:13,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:13,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:13,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216340796] [2021-08-27 04:26:13,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216340796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:13,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:13,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:13,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182985602] [2021-08-27 04:26:13,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:13,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,567 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:13,756 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2021-08-27 04:26:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 04:26:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:13,758 INFO L225 Difference]: With dead ends: 151 [2021-08-27 04:26:13,758 INFO L226 Difference]: Without dead ends: 151 [2021-08-27 04:26:13,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-27 04:26:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2021-08-27 04:26:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 64 states have (on average 1.96875) internal successors, (126), 118 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-08-27 04:26:13,764 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 7 [2021-08-27 04:26:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:13,765 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-08-27 04:26:13,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-08-27 04:26:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:26:13,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:13,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:13,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:26:13,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:13,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1651275756, now seen corresponding path program 1 times [2021-08-27 04:26:13,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:13,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922232690] [2021-08-27 04:26:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:13,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:13,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:13,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922232690] [2021-08-27 04:26:13,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922232690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:13,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:13,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:13,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156783374] [2021-08-27 04:26:13,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:13,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:13,911 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,256 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2021-08-27 04:26:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:14,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 04:26:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,260 INFO L225 Difference]: With dead ends: 192 [2021-08-27 04:26:14,260 INFO L226 Difference]: Without dead ends: 192 [2021-08-27 04:26:14,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-27 04:26:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2021-08-27 04:26:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.91) internal successors, (191), 151 states have internal predecessors, (191), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2021-08-27 04:26:14,267 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 13 [2021-08-27 04:26:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,267 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2021-08-27 04:26:14,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2021-08-27 04:26:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 04:26:14,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:26:14,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1651275755, now seen corresponding path program 1 times [2021-08-27 04:26:14,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442314881] [2021-08-27 04:26:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442314881] [2021-08-27 04:26:14,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442314881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:14,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759920310] [2021-08-27 04:26:14,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:14,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:14,342 INFO L87 Difference]: Start difference. First operand 155 states and 194 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,526 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2021-08-27 04:26:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:14,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 04:26:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,527 INFO L225 Difference]: With dead ends: 153 [2021-08-27 04:26:14,527 INFO L226 Difference]: Without dead ends: 153 [2021-08-27 04:26:14,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-27 04:26:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 146. [2021-08-27 04:26:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 107 states have (on average 1.6074766355140186) internal successors, (172), 142 states have internal predecessors, (172), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 175 transitions. [2021-08-27 04:26:14,534 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 175 transitions. Word has length 13 [2021-08-27 04:26:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,534 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 175 transitions. [2021-08-27 04:26:14,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 175 transitions. [2021-08-27 04:26:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 04:26:14,535 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:26:14,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1399388165, now seen corresponding path program 1 times [2021-08-27 04:26:14,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85783305] [2021-08-27 04:26:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85783305] [2021-08-27 04:26:14,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85783305] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:14,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664236293] [2021-08-27 04:26:14,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:14,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,589 INFO L87 Difference]: Start difference. First operand 146 states and 175 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,777 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2021-08-27 04:26:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:26:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 04:26:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,778 INFO L225 Difference]: With dead ends: 145 [2021-08-27 04:26:14,778 INFO L226 Difference]: Without dead ends: 145 [2021-08-27 04:26:14,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-27 04:26:14,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-08-27 04:26:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.588785046728972) internal successors, (170), 141 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2021-08-27 04:26:14,782 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 16 [2021-08-27 04:26:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,782 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2021-08-27 04:26:14,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2021-08-27 04:26:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 04:26:14,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:26:14,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1399388164, now seen corresponding path program 1 times [2021-08-27 04:26:14,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795742481] [2021-08-27 04:26:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795742481] [2021-08-27 04:26:14,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795742481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:14,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95202255] [2021-08-27 04:26:14,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:14,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:14,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,846 INFO L87 Difference]: Start difference. First operand 145 states and 173 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,037 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2021-08-27 04:26:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 04:26:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,046 INFO L225 Difference]: With dead ends: 144 [2021-08-27 04:26:15,046 INFO L226 Difference]: Without dead ends: 144 [2021-08-27 04:26:15,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-27 04:26:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-08-27 04:26:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 140 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-08-27 04:26:15,065 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 16 [2021-08-27 04:26:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-08-27 04:26:15,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-08-27 04:26:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:15,067 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:26:15,067 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:15,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1162376122, now seen corresponding path program 1 times [2021-08-27 04:26:15,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874722203] [2021-08-27 04:26:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874722203] [2021-08-27 04:26:15,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874722203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:15,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303465525] [2021-08-27 04:26:15,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:15,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,178 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,357 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2021-08-27 04:26:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:26:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,358 INFO L225 Difference]: With dead ends: 152 [2021-08-27 04:26:15,358 INFO L226 Difference]: Without dead ends: 152 [2021-08-27 04:26:15,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-27 04:26:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-08-27 04:26:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 111 states have (on average 1.5585585585585586) internal successors, (173), 144 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2021-08-27 04:26:15,361 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 20 [2021-08-27 04:26:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,362 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2021-08-27 04:26:15,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2021-08-27 04:26:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:15,362 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 04:26:15,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr45REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:15,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1374943678, now seen corresponding path program 1 times [2021-08-27 04:26:15,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138501415] [2021-08-27 04:26:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138501415] [2021-08-27 04:26:15,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138501415] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:15,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032777453] [2021-08-27 04:26:15,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:15,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:15,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:15,449 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,628 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2021-08-27 04:26:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,629 INFO L225 Difference]: With dead ends: 166 [2021-08-27 04:26:15,629 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 04:26:15,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 04:26:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2021-08-27 04:26:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 128 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-08-27 04:26:15,632 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 20 [2021-08-27 04:26:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,633 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-08-27 04:26:15,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-08-27 04:26:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:15,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 04:26:15,635 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,635 INFO L82 PathProgramCache]: Analyzing trace with hash -107919043, now seen corresponding path program 1 times [2021-08-27 04:26:15,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824840918] [2021-08-27 04:26:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824840918] [2021-08-27 04:26:15,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824840918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-27 04:26:15,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539652233] [2021-08-27 04:26:15,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 04:26:15,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 04:26:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:26:15,768 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:16,095 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2021-08-27 04:26:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:26:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:16,096 INFO L225 Difference]: With dead ends: 136 [2021-08-27 04:26:16,096 INFO L226 Difference]: Without dead ends: 136 [2021-08-27 04:26:16,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-08-27 04:26:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-27 04:26:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2021-08-27 04:26:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 127 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2021-08-27 04:26:16,099 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 20 [2021-08-27 04:26:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:16,099 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2021-08-27 04:26:16,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2021-08-27 04:26:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:16,100 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:16,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:16,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 04:26:16,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash -107919042, now seen corresponding path program 1 times [2021-08-27 04:26:16,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:16,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908784209] [2021-08-27 04:26:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:16,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:16,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:16,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908784209] [2021-08-27 04:26:16,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908784209] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:16,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:16,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-27 04:26:16,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287231356] [2021-08-27 04:26:16,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 04:26:16,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 04:26:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:26:16,268 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:16,855 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2021-08-27 04:26:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 04:26:16,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:16,856 INFO L225 Difference]: With dead ends: 132 [2021-08-27 04:26:16,856 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 04:26:16,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 274.2ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-08-27 04:26:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 04:26:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-08-27 04:26:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 116 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2021-08-27 04:26:16,858 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 20 [2021-08-27 04:26:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:16,858 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2021-08-27 04:26:16,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2021-08-27 04:26:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:26:16,859 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:16,859 INFO L512 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] [2021-08-27 04:26:16,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:26:16,859 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:16,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1934707260, now seen corresponding path program 1 times [2021-08-27 04:26:16,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:16,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138763891] [2021-08-27 04:26:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:16,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:16,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:16,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138763891] [2021-08-27 04:26:16,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138763891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:16,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:16,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:16,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303422035] [2021-08-27 04:26:16,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:16,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:16,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:16,913 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:17,113 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-08-27 04:26:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-27 04:26:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:17,114 INFO L225 Difference]: With dead ends: 120 [2021-08-27 04:26:17,114 INFO L226 Difference]: Without dead ends: 120 [2021-08-27 04:26:17,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-27 04:26:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-27 04:26:17,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-08-27 04:26:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 115 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-08-27 04:26:17,117 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 23 [2021-08-27 04:26:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:17,117 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-08-27 04:26:17,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-08-27 04:26:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:26:17,118 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:17,118 INFO L512 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] [2021-08-27 04:26:17,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 04:26:17,118 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1934707261, now seen corresponding path program 1 times [2021-08-27 04:26:17,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:17,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422149342] [2021-08-27 04:26:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:17,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:17,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:17,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422149342] [2021-08-27 04:26:17,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422149342] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:17,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:17,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:17,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326600415] [2021-08-27 04:26:17,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:17,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:17,188 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:17,372 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-08-27 04:26:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-08-27 04:26:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:17,374 INFO L225 Difference]: With dead ends: 116 [2021-08-27 04:26:17,374 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 04:26:17,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 04:26:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 04:26:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 112 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2021-08-27 04:26:17,376 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 23 [2021-08-27 04:26:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2021-08-27 04:26:17,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2021-08-27 04:26:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 04:26:17,377 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:17,377 INFO L512 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] [2021-08-27 04:26:17,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 04:26:17,377 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr44REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash 543206775, now seen corresponding path program 1 times [2021-08-27 04:26:17,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:17,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129359953] [2021-08-27 04:26:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:17,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:17,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:17,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129359953] [2021-08-27 04:26:17,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129359953] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:26:17,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188221868] [2021-08-27 04:26:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:17,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:26:17,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:17,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:26:17,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 04:26:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:17,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 04:26:17,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:17,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 04:26:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:26:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-08-27 04:26:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 04:26:17,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-08-27 04:26:17,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 04:26:17,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-08-27 04:26:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:17,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188221868] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:17,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 04:26:17,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-08-27 04:26:17,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966373660] [2021-08-27 04:26:17,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:26:17,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:26:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:26:17,969 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:18,264 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2021-08-27 04:26:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 04:26:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-08-27 04:26:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:18,265 INFO L225 Difference]: With dead ends: 147 [2021-08-27 04:26:18,265 INFO L226 Difference]: Without dead ends: 146 [2021-08-27 04:26:18,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 189.8ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-08-27 04:26:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-27 04:26:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2021-08-27 04:26:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 115 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-08-27 04:26:18,268 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 24 [2021-08-27 04:26:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:18,268 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-08-27 04:26:18,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-08-27 04:26:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 04:26:18,269 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:18,269 INFO L512 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] [2021-08-27 04:26:18,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:26:18,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 04:26:18,489 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr50REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:18,490 INFO L82 PathProgramCache]: Analyzing trace with hash -342089969, now seen corresponding path program 1 times [2021-08-27 04:26:18,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:18,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403052805] [2021-08-27 04:26:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:18,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:18,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:18,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403052805] [2021-08-27 04:26:18,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403052805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:18,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:18,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:26:18,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155769624] [2021-08-27 04:26:18,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:26:18,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:26:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:18,592 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:18,864 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2021-08-27 04:26:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 04:26:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-27 04:26:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:18,865 INFO L225 Difference]: With dead ends: 148 [2021-08-27 04:26:18,865 INFO L226 Difference]: Without dead ends: 148 [2021-08-27 04:26:18,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:26:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-27 04:26:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-08-27 04:26:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 116 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2021-08-27 04:26:18,868 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 25 [2021-08-27 04:26:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:18,868 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2021-08-27 04:26:18,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2021-08-27 04:26:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 04:26:18,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:18,872 INFO L512 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] [2021-08-27 04:26:18,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-27 04:26:18,872 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr51REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash -342089968, now seen corresponding path program 1 times [2021-08-27 04:26:18,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:18,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808904442] [2021-08-27 04:26:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:18,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:19,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:19,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808904442] [2021-08-27 04:26:19,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808904442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:19,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:19,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:26:19,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873418381] [2021-08-27 04:26:19,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 04:26:19,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:19,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 04:26:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:19,025 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:19,387 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-08-27 04:26:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 04:26:19,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-27 04:26:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:19,389 INFO L225 Difference]: With dead ends: 165 [2021-08-27 04:26:19,389 INFO L226 Difference]: Without dead ends: 165 [2021-08-27 04:26:19,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 04:26:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-27 04:26:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 122. [2021-08-27 04:26:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 118 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2021-08-27 04:26:19,393 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 25 [2021-08-27 04:26:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:19,393 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2021-08-27 04:26:19,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2021-08-27 04:26:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 04:26:19,394 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:19,394 INFO L512 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] [2021-08-27 04:26:19,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-27 04:26:19,396 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr38REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1597051052, now seen corresponding path program 1 times [2021-08-27 04:26:19,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:19,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512156298] [2021-08-27 04:26:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:19,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:19,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:19,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512156298] [2021-08-27 04:26:19,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512156298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:19,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:19,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:26:19,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633560821] [2021-08-27 04:26:19,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:19,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:19,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:19,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:19,480 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:19,695 INFO L93 Difference]: Finished difference Result 184 states and 203 transitions. [2021-08-27 04:26:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:19,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-08-27 04:26:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:19,697 INFO L225 Difference]: With dead ends: 184 [2021-08-27 04:26:19,697 INFO L226 Difference]: Without dead ends: 184 [2021-08-27 04:26:19,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-27 04:26:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 136. [2021-08-27 04:26:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.3727272727272728) internal successors, (151), 132 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 154 transitions. [2021-08-27 04:26:19,701 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 154 transitions. Word has length 26 [2021-08-27 04:26:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:19,701 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 154 transitions. [2021-08-27 04:26:19,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 154 transitions. [2021-08-27 04:26:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 04:26:19,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:19,701 INFO L512 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] [2021-08-27 04:26:19,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-27 04:26:19,702 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr52ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 56 more)] === [2021-08-27 04:26:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1964025940, now seen corresponding path program 1 times [2021-08-27 04:26:19,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:19,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495256340] [2021-08-27 04:26:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:19,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:19,712 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 04:26:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:19,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 04:26:19,732 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 04:26:19,733 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr52ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:19,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:26:19,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:26:19,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:26:19,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 04:26:19,735 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 04:26:19,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 04:26:19,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 04:26:19,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 04:26:19,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 04:26:19,736 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 04:26:19,739 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 04:26:19,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-08-27 04:26:19,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-08-27 04:26:19,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-08-27 04:26:19,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:19,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:19,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-27 04:26:19,749 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:26:19,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:26:19 BoogieIcfgContainer [2021-08-27 04:26:19,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:26:19,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:26:19,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:26:19,764 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:26:19,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:12" (3/4) ... [2021-08-27 04:26:19,765 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 04:26:19,799 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:26:19,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:26:19,800 INFO L168 Benchmark]: Toolchain (without parser) took 7962.53 ms. Allocated memory was 62.9 MB in the beginning and 161.5 MB in the end (delta: 98.6 MB). Free memory was 41.5 MB in the beginning and 131.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,800 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:26:19,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.92 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 39.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,801 INFO L168 Benchmark]: Boogie Preprocessor took 71.39 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 36.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,801 INFO L168 Benchmark]: RCFGBuilder took 658.70 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 42.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,802 INFO L168 Benchmark]: TraceAbstraction took 6816.68 ms. Allocated memory was 75.5 MB in the beginning and 161.5 MB in the end (delta: 86.0 MB). Free memory was 42.1 MB in the beginning and 133.2 MB in the end (delta: -91.1 MB). Peak memory consumption was 84.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,802 INFO L168 Benchmark]: Witness Printer took 35.55 ms. Allocated memory is still 161.5 MB. Free memory was 133.2 MB in the beginning and 131.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:19,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.92 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 39.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.39 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 36.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 658.70 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 42.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6816.68 ms. Allocated memory was 75.5 MB in the beginning and 161.5 MB in the end (delta: 86.0 MB). Free memory was 42.1 MB in the beginning and 133.2 MB in the end (delta: -91.1 MB). Peak memory consumption was 84.4 MB. Max. memory is 16.1 GB. * Witness Printer took 35.55 ms. Allocated memory is still 161.5 MB. Free memory was 133.2 MB in the beginning and 131.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1063]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) VAL [head={-1:0}] [L1002] head->prev = ((void*)0) VAL [head={-1:0}] [L1003] head->data = 0 VAL [head={-1:0}] [L1005] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 VAL [head={-1:0}, x={-2:0}] [L1022] x->next = head VAL [head={-1:0}, x={-2:0}] [L1023] x->prev = ((void*)0) VAL [head={-1:0}, x={-2:0}] [L1024] head = x VAL [head={-2:0}, x={-2:0}] [L1050] x = head VAL [head={-2:0}, x={-2:0}] [L1053] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=1] [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next VAL [head={-2:0}, x={-2:0}, x->next={-1:0}] [L1059] x = x->next [L1060] COND TRUE \read(*x) VAL [head={-2:0}, x={-1:0}] [L1062] EXPR x->data VAL [head={-2:0}, x={-1:0}, x->data=0] [L1062] COND TRUE x->data != 1 [L1063] reach_error() VAL [head={-2:0}, x={-1:0}] - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1011]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1012]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1053]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 135 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 6748.4ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 18.2ms, AutomataDifference: 4216.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1194 SDtfs, 1790 SDslu, 2133 SDs, 0 SdLazy, 5547 SolverSat, 338 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2652.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1178.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=3, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 79.8ms AutomataMinimizationTime, 16 MinimizatonAttempts, 304 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.8ms SsaConstructionTime, 193.3ms SatisfiabilityAnalysisTime, 1609.0ms InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 305 ConstructedInterpolants, 2 QuantifiedInterpolants, 2117 SizeOfPredicates, 6 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 17 InterpolantComputations, 16 PerfectInterpolantSequences, 2/3 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! [2021-08-27 04:26:19,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...