./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer --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 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-30 01:16:51,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:16:51,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:16:51,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:16:51,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:16:51,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:16:51,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:16:51,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:16:51,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:16:51,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:16:51,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:16:51,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:16:51,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:16:51,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:16:51,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:16:51,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:16:51,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:16:51,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:16:51,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:16:51,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:16:51,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:16:51,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:16:51,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:16:51,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:16:51,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:16:51,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:16:51,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:16:51,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:16:51,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:16:51,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:16:51,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:16:51,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:16:51,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:16:51,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:16:51,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:16:51,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:16:51,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:16:51,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:16:51,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:16:51,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:16:51,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:16:51,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-30 01:16:51,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:16:51,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:16:51,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:16:51,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:16:51,367 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:16:51,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:16:51,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:16:51,368 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:16:51,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:16:51,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:16:51,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:16:51,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 01:16:51,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 01:16:51,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:16:51,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:16:51,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:16:51,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:16:51,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:16:51,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:16:51,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:16:51,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:16:51,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:51,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:16:51,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:16:51,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:16:51,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:16:51,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:16:51,375 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:/tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c [2020-11-30 01:16:51,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:16:51,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:16:51,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:16:51,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:16:51,905 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:16:51,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-11-30 01:16:52,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/data/0551c82a0/8dbef8e4a71d46b0aca16976b203086b/FLAGfef7d3762 [2020-11-30 01:16:52,932 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:16:52,933 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-11-30 01:16:52,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/data/0551c82a0/8dbef8e4a71d46b0aca16976b203086b/FLAGfef7d3762 [2020-11-30 01:16:53,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/data/0551c82a0/8dbef8e4a71d46b0aca16976b203086b [2020-11-30 01:16:53,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:16:53,144 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 01:16:53,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:53,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:16:53,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:16:53,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2859531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53, skipping insertion in model container [2020-11-30 01:16:53,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:16:53,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:16:53,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:53,656 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:16:53,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:53,819 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:16:53,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53 WrapperNode [2020-11-30 01:16:53,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:53,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:16:53,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:16:53,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:16:53,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... [2020-11-30 01:16:53,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:16:53,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:16:53,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:16:53,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:16:53,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 01:16:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:16:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-30 01:16:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 01:16:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-30 01:16:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-30 01:16:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-30 01:16:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-30 01:16:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-30 01:16:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-30 01:16:54,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-30 01:16:54,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-30 01:16:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-30 01:16:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-30 01:16:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-30 01:16:54,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-30 01:16:54,042 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-30 01:16:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-30 01:16:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-30 01:16:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-30 01:16:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-30 01:16:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-30 01:16:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-30 01:16:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-30 01:16:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-30 01:16:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-30 01:16:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-30 01:16:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-30 01:16:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-30 01:16:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-30 01:16:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-30 01:16:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-30 01:16:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-30 01:16:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-30 01:16:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-30 01:16:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-30 01:16:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-30 01:16:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-30 01:16:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-30 01:16:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-30 01:16:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-30 01:16:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-30 01:16:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-30 01:16:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-30 01:16:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-30 01:16:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-30 01:16:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-30 01:16:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-30 01:16:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-30 01:16:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-30 01:16:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-30 01:16:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-30 01:16:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-30 01:16:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-30 01:16:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-30 01:16:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-30 01:16:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-30 01:16:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-30 01:16:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-30 01:16:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-30 01:16:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-30 01:16:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-30 01:16:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-30 01:16:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-30 01:16:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-30 01:16:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-30 01:16:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-30 01:16:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-30 01:16:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-30 01:16:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-30 01:16:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-30 01:16:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-30 01:16:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-30 01:16:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-30 01:16:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-30 01:16:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-30 01:16:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-30 01:16:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-30 01:16:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-30 01:16:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-30 01:16:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-30 01:16:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-30 01:16:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-30 01:16:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-30 01:16:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-30 01:16:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-30 01:16:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-30 01:16:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-30 01:16:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-30 01:16:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-30 01:16:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-30 01:16:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-30 01:16:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-30 01:16:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-30 01:16:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-30 01:16:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-30 01:16:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-30 01:16:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-30 01:16:54,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-30 01:16:54,068 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-30 01:16:54,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-30 01:16:54,068 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-30 01:16:54,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-30 01:16:54,068 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-30 01:16:54,069 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-30 01:16:54,069 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-30 01:16:54,069 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-30 01:16:54,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-30 01:16:54,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-30 01:16:54,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-30 01:16:54,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-30 01:16:54,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-30 01:16:54,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:16:54,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 01:16:54,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:16:54,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 01:16:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:16:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 01:16:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:16:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:16:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 01:16:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:16:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:16:55,535 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:16:55,536 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:16:55,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:55 BoogieIcfgContainer [2020-11-30 01:16:55,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:16:55,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:16:55,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:16:55,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:16:55,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:16:53" (1/3) ... [2020-11-30 01:16:55,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc10145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:55, skipping insertion in model container [2020-11-30 01:16:55,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:53" (2/3) ... [2020-11-30 01:16:55,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc10145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:55, skipping insertion in model container [2020-11-30 01:16:55,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:55" (3/3) ... [2020-11-30 01:16:55,560 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-11-30 01:16:55,576 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:16:55,583 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 44 error locations. [2020-11-30 01:16:55,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2020-11-30 01:16:55,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:16:55,638 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 01:16:55,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:16:55,638 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:16:55,638 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:16:55,639 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:16:55,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:16:55,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:16:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-11-30 01:16:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:16:55,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:55,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:55,672 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash 300944310, now seen corresponding path program 1 times [2020-11-30 01:16:55,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:55,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316890077] [2020-11-30 01:16:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:56,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316890077] [2020-11-30 01:16:56,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:56,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:16:56,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890238873] [2020-11-30 01:16:56,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:16:56,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:56,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:16:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:56,061 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 4 states. [2020-11-30 01:16:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:56,566 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-11-30 01:16:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:16:56,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:16:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:56,594 INFO L225 Difference]: With dead ends: 112 [2020-11-30 01:16:56,594 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 01:16:56,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 01:16:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-11-30 01:16:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-30 01:16:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-11-30 01:16:56,660 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 7 [2020-11-30 01:16:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:56,661 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-11-30 01:16:56,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:16:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-11-30 01:16:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:16:56,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:56,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:56,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:16:56,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash 300944311, now seen corresponding path program 1 times [2020-11-30 01:16:56,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:56,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379945951] [2020-11-30 01:16:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:56,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:56,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379945951] [2020-11-30 01:16:56,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:56,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:16:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564408035] [2020-11-30 01:16:56,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:16:56,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:16:56,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:56,852 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 4 states. [2020-11-30 01:16:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:57,241 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-11-30 01:16:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:16:57,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:16:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:57,244 INFO L225 Difference]: With dead ends: 107 [2020-11-30 01:16:57,245 INFO L226 Difference]: Without dead ends: 107 [2020-11-30 01:16:57,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-30 01:16:57,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-11-30 01:16:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-30 01:16:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-11-30 01:16:57,272 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 7 [2020-11-30 01:16:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:57,273 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-11-30 01:16:57,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:16:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-11-30 01:16:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:16:57,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:57,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:57,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:16:57,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823625, now seen corresponding path program 1 times [2020-11-30 01:16:57,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:57,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312505276] [2020-11-30 01:16:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:57,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312505276] [2020-11-30 01:16:57,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:57,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:16:57,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531087882] [2020-11-30 01:16:57,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:16:57,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:16:57,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:16:57,474 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 5 states. [2020-11-30 01:16:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:57,827 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-11-30 01:16:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:16:57,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:16:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:57,830 INFO L225 Difference]: With dead ends: 93 [2020-11-30 01:16:57,830 INFO L226 Difference]: Without dead ends: 93 [2020-11-30 01:16:57,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:16:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-30 01:16:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-11-30 01:16:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 01:16:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-11-30 01:16:57,851 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 12 [2020-11-30 01:16:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:57,852 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-11-30 01:16:57,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:16:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-11-30 01:16:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:16:57,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:57,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:57,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:16:57,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823624, now seen corresponding path program 1 times [2020-11-30 01:16:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:57,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454189759] [2020-11-30 01:16:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:58,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454189759] [2020-11-30 01:16:58,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:58,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:16:58,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406849578] [2020-11-30 01:16:58,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:16:58,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:16:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:16:58,041 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 5 states. [2020-11-30 01:16:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:58,440 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2020-11-30 01:16:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:16:58,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 01:16:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:58,442 INFO L225 Difference]: With dead ends: 103 [2020-11-30 01:16:58,442 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 01:16:58,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:16:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 01:16:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-11-30 01:16:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 01:16:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-11-30 01:16:58,454 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 12 [2020-11-30 01:16:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:58,454 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-11-30 01:16:58,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:16:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-11-30 01:16:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:16:58,455 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:58,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:58,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:16:58,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:58,457 INFO L82 PathProgramCache]: Analyzing trace with hash -565115390, now seen corresponding path program 1 times [2020-11-30 01:16:58,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:58,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119542004] [2020-11-30 01:16:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:58,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119542004] [2020-11-30 01:16:58,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:58,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:16:58,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220784221] [2020-11-30 01:16:58,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:16:58,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:58,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:16:58,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:16:58,646 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 7 states. [2020-11-30 01:16:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:59,507 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-11-30 01:16:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:16:59,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 01:16:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:59,510 INFO L225 Difference]: With dead ends: 137 [2020-11-30 01:16:59,510 INFO L226 Difference]: Without dead ends: 137 [2020-11-30 01:16:59,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:16:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-30 01:16:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2020-11-30 01:16:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 01:16:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-11-30 01:16:59,537 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 15 [2020-11-30 01:16:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:59,538 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-11-30 01:16:59,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:16:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-11-30 01:16:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:16:59,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:59,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:59,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:16:59,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:16:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:59,543 INFO L82 PathProgramCache]: Analyzing trace with hash -565115389, now seen corresponding path program 1 times [2020-11-30 01:16:59,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:59,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178049407] [2020-11-30 01:16:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:16:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:59,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178049407] [2020-11-30 01:16:59,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:59,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:16:59,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265778448] [2020-11-30 01:16:59,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:16:59,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:59,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:16:59,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:16:59,720 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 7 states. [2020-11-30 01:17:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:00,458 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-11-30 01:17:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:00,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 01:17:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:00,460 INFO L225 Difference]: With dead ends: 135 [2020-11-30 01:17:00,460 INFO L226 Difference]: Without dead ends: 135 [2020-11-30 01:17:00,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:17:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-30 01:17:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2020-11-30 01:17:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-30 01:17:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-11-30 01:17:00,469 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 15 [2020-11-30 01:17:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:00,470 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-11-30 01:17:00,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:17:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-11-30 01:17:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:17:00,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:00,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:00,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:17:00,472 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668879, now seen corresponding path program 1 times [2020-11-30 01:17:00,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:00,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630725955] [2020-11-30 01:17:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630725955] [2020-11-30 01:17:00,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:00,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:17:00,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429643951] [2020-11-30 01:17:00,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:00,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:00,691 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 9 states. [2020-11-30 01:17:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:01,349 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-11-30 01:17:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:17:01,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-30 01:17:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:01,351 INFO L225 Difference]: With dead ends: 127 [2020-11-30 01:17:01,351 INFO L226 Difference]: Without dead ends: 127 [2020-11-30 01:17:01,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:17:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-30 01:17:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 86. [2020-11-30 01:17:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-30 01:17:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-11-30 01:17:01,364 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 17 [2020-11-30 01:17:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:01,365 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-11-30 01:17:01,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-11-30 01:17:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:17:01,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:01,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:01,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:17:01,367 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668878, now seen corresponding path program 1 times [2020-11-30 01:17:01,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:01,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093019800] [2020-11-30 01:17:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:01,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093019800] [2020-11-30 01:17:01,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:01,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:17:01,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940571900] [2020-11-30 01:17:01,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:01,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:01,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:01,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:01,614 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 9 states. [2020-11-30 01:17:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:02,235 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-11-30 01:17:02,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:02,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-30 01:17:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:02,237 INFO L225 Difference]: With dead ends: 159 [2020-11-30 01:17:02,237 INFO L226 Difference]: Without dead ends: 159 [2020-11-30 01:17:02,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:17:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-30 01:17:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2020-11-30 01:17:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:17:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-11-30 01:17:02,246 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 17 [2020-11-30 01:17:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:02,246 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-11-30 01:17:02,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-11-30 01:17:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:17:02,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:02,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:02,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:17:02,248 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2122246388, now seen corresponding path program 1 times [2020-11-30 01:17:02,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:02,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898220577] [2020-11-30 01:17:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:02,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898220577] [2020-11-30 01:17:02,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:02,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:17:02,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511433973] [2020-11-30 01:17:02,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:02,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:02,447 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 9 states. [2020-11-30 01:17:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:02,992 INFO L93 Difference]: Finished difference Result 158 states and 173 transitions. [2020-11-30 01:17:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:02,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 01:17:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:02,994 INFO L225 Difference]: With dead ends: 158 [2020-11-30 01:17:02,994 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 01:17:02,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:17:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 01:17:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2020-11-30 01:17:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:17:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2020-11-30 01:17:03,013 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 18 [2020-11-30 01:17:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:03,014 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2020-11-30 01:17:03,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2020-11-30 01:17:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:17:03,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:03,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:03,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:17:03,017 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:03,019 INFO L82 PathProgramCache]: Analyzing trace with hash 650548680, now seen corresponding path program 1 times [2020-11-30 01:17:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:03,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63712082] [2020-11-30 01:17:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:03,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63712082] [2020-11-30 01:17:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:17:03,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050179796] [2020-11-30 01:17:03,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:17:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:03,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:17:03,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:17:03,282 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand 10 states. [2020-11-30 01:17:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:03,976 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-11-30 01:17:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:17:03,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-30 01:17:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:03,979 INFO L225 Difference]: With dead ends: 144 [2020-11-30 01:17:03,979 INFO L226 Difference]: Without dead ends: 144 [2020-11-30 01:17:03,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:17:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-30 01:17:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2020-11-30 01:17:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:17:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-11-30 01:17:03,995 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 20 [2020-11-30 01:17:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:03,997 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-11-30 01:17:03,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:17:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-11-30 01:17:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:17:04,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:04,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:04,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:17:04,002 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:04,003 INFO L82 PathProgramCache]: Analyzing trace with hash 650548681, now seen corresponding path program 1 times [2020-11-30 01:17:04,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:04,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344156018] [2020-11-30 01:17:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:04,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344156018] [2020-11-30 01:17:04,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:04,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:17:04,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846715806] [2020-11-30 01:17:04,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:04,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:04,289 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 9 states. [2020-11-30 01:17:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:04,962 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-30 01:17:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:17:04,963 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-11-30 01:17:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:04,965 INFO L225 Difference]: With dead ends: 154 [2020-11-30 01:17:04,965 INFO L226 Difference]: Without dead ends: 154 [2020-11-30 01:17:04,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:17:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-30 01:17:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 98. [2020-11-30 01:17:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-30 01:17:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-11-30 01:17:04,973 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 20 [2020-11-30 01:17:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:04,973 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-11-30 01:17:04,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-11-30 01:17:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:17:04,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:04,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:04,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:17:04,981 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842199, now seen corresponding path program 1 times [2020-11-30 01:17:04,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:04,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551465415] [2020-11-30 01:17:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:05,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551465415] [2020-11-30 01:17:05,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:05,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:17:05,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705129544] [2020-11-30 01:17:05,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:17:05,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:05,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:17:05,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:17:05,100 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 8 states. [2020-11-30 01:17:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:05,641 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2020-11-30 01:17:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:17:05,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 01:17:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:05,643 INFO L225 Difference]: With dead ends: 134 [2020-11-30 01:17:05,643 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 01:17:05,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:17:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 01:17:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 99. [2020-11-30 01:17:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-30 01:17:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-11-30 01:17:05,650 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 21 [2020-11-30 01:17:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:05,650 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-11-30 01:17:05,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:17:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-11-30 01:17:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:17:05,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:05,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:05,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 01:17:05,652 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842198, now seen corresponding path program 1 times [2020-11-30 01:17:05,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:05,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567221039] [2020-11-30 01:17:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:05,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567221039] [2020-11-30 01:17:05,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:05,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 01:17:05,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090806960] [2020-11-30 01:17:05,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:17:06,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:06,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:17:06,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:17:06,002 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 12 states. [2020-11-30 01:17:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:06,876 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2020-11-30 01:17:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:17:06,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-11-30 01:17:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:06,878 INFO L225 Difference]: With dead ends: 144 [2020-11-30 01:17:06,878 INFO L226 Difference]: Without dead ends: 144 [2020-11-30 01:17:06,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:17:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-30 01:17:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-11-30 01:17:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-30 01:17:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2020-11-30 01:17:06,885 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 21 [2020-11-30 01:17:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:06,885 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2020-11-30 01:17:06,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:17:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2020-11-30 01:17:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:17:06,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:06,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:06,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 01:17:06,888 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1280392747, now seen corresponding path program 1 times [2020-11-30 01:17:06,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:06,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993764750] [2020-11-30 01:17:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:06,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993764750] [2020-11-30 01:17:06,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:06,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:17:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818700106] [2020-11-30 01:17:06,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:17:06,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:17:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:17:06,993 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand 7 states. [2020-11-30 01:17:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:07,460 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2020-11-30 01:17:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:07,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-30 01:17:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:07,462 INFO L225 Difference]: With dead ends: 150 [2020-11-30 01:17:07,462 INFO L226 Difference]: Without dead ends: 150 [2020-11-30 01:17:07,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:17:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-30 01:17:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 117. [2020-11-30 01:17:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-30 01:17:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2020-11-30 01:17:07,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 22 [2020-11-30 01:17:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:07,470 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2020-11-30 01:17:07,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:17:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2020-11-30 01:17:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:17:07,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:07,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:07,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 01:17:07,472 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:07,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1589069240, now seen corresponding path program 1 times [2020-11-30 01:17:07,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:07,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269112810] [2020-11-30 01:17:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:07,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269112810] [2020-11-30 01:17:07,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 01:17:07,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627425450] [2020-11-30 01:17:07,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:17:07,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:17:07,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:17:07,834 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand 12 states. [2020-11-30 01:17:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:08,565 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2020-11-30 01:17:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:17:08,567 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-11-30 01:17:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:08,569 INFO L225 Difference]: With dead ends: 153 [2020-11-30 01:17:08,569 INFO L226 Difference]: Without dead ends: 153 [2020-11-30 01:17:08,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:17:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-30 01:17:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-11-30 01:17:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-11-30 01:17:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-11-30 01:17:08,575 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 23 [2020-11-30 01:17:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:08,576 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-11-30 01:17:08,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:17:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-11-30 01:17:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:17:08,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:08,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:08,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 01:17:08,578 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:08,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2016506411, now seen corresponding path program 1 times [2020-11-30 01:17:08,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:08,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497340992] [2020-11-30 01:17:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:08,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497340992] [2020-11-30 01:17:08,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:08,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:17:08,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875158100] [2020-11-30 01:17:08,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:08,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:08,789 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 9 states. [2020-11-30 01:17:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:09,304 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-11-30 01:17:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:17:09,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-30 01:17:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:09,306 INFO L225 Difference]: With dead ends: 146 [2020-11-30 01:17:09,307 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 01:17:09,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:17:09,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 01:17:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-11-30 01:17:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-30 01:17:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2020-11-30 01:17:09,313 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 24 [2020-11-30 01:17:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:09,314 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2020-11-30 01:17:09,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2020-11-30 01:17:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:17:09,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:09,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:09,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 01:17:09,316 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1912764758, now seen corresponding path program 1 times [2020-11-30 01:17:09,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:09,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609835338] [2020-11-30 01:17:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:09,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609835338] [2020-11-30 01:17:09,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:09,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:17:09,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63738084] [2020-11-30 01:17:09,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:17:09,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:17:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:17:09,507 INFO L87 Difference]: Start difference. First operand 119 states and 147 transitions. Second operand 9 states. [2020-11-30 01:17:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:09,989 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2020-11-30 01:17:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:09,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 01:17:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:09,991 INFO L225 Difference]: With dead ends: 138 [2020-11-30 01:17:09,991 INFO L226 Difference]: Without dead ends: 138 [2020-11-30 01:17:09,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:17:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-30 01:17:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-11-30 01:17:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-30 01:17:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-11-30 01:17:09,998 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 25 [2020-11-30 01:17:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:09,999 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-11-30 01:17:09,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:17:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-11-30 01:17:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:17:10,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:10,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:10,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 01:17:10,001 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1043391332, now seen corresponding path program 1 times [2020-11-30 01:17:10,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233745687] [2020-11-30 01:17:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:10,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:10,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233745687] [2020-11-30 01:17:10,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:10,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:17:10,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798150391] [2020-11-30 01:17:10,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:17:10,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:10,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:17:10,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:17:10,129 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 6 states. [2020-11-30 01:17:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:10,429 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2020-11-30 01:17:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:17:10,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-30 01:17:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:10,432 INFO L225 Difference]: With dead ends: 123 [2020-11-30 01:17:10,432 INFO L226 Difference]: Without dead ends: 123 [2020-11-30 01:17:10,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:17:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-30 01:17:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2020-11-30 01:17:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 01:17:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2020-11-30 01:17:10,439 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 25 [2020-11-30 01:17:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:10,439 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2020-11-30 01:17:10,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:17:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2020-11-30 01:17:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:17:10,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:10,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:10,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 01:17:10,440 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1043391331, now seen corresponding path program 1 times [2020-11-30 01:17:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:10,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401157781] [2020-11-30 01:17:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:10,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401157781] [2020-11-30 01:17:10,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:10,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 01:17:10,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461819224] [2020-11-30 01:17:10,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:17:10,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:10,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:17:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:17:10,625 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand 11 states. [2020-11-30 01:17:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:11,243 INFO L93 Difference]: Finished difference Result 139 states and 155 transitions. [2020-11-30 01:17:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:17:11,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-30 01:17:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:11,245 INFO L225 Difference]: With dead ends: 139 [2020-11-30 01:17:11,246 INFO L226 Difference]: Without dead ends: 139 [2020-11-30 01:17:11,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:17:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-30 01:17:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2020-11-30 01:17:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 01:17:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2020-11-30 01:17:11,252 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 25 [2020-11-30 01:17:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:11,252 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2020-11-30 01:17:11,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:17:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2020-11-30 01:17:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:17:11,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:11,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:11,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-30 01:17:11,254 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:11,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2026205111, now seen corresponding path program 1 times [2020-11-30 01:17:11,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:11,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487687673] [2020-11-30 01:17:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:11,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487687673] [2020-11-30 01:17:11,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:11,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-30 01:17:11,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73197886] [2020-11-30 01:17:11,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:17:11,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:11,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:17:11,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:17:11,626 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand 13 states. [2020-11-30 01:17:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:12,360 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2020-11-30 01:17:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:17:12,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-11-30 01:17:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:12,362 INFO L225 Difference]: With dead ends: 138 [2020-11-30 01:17:12,362 INFO L226 Difference]: Without dead ends: 138 [2020-11-30 01:17:12,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-11-30 01:17:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-30 01:17:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2020-11-30 01:17:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 01:17:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2020-11-30 01:17:12,367 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 26 [2020-11-30 01:17:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:12,367 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2020-11-30 01:17:12,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:17:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2020-11-30 01:17:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:17:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:12,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:12,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-30 01:17:12,369 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash -928172417, now seen corresponding path program 1 times [2020-11-30 01:17:12,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:12,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607092433] [2020-11-30 01:17:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:12,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607092433] [2020-11-30 01:17:12,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:12,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:17:12,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121084065] [2020-11-30 01:17:12,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:17:12,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:12,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:17:12,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:17:12,445 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand 4 states. [2020-11-30 01:17:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:12,634 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2020-11-30 01:17:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:17:12,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-30 01:17:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:12,636 INFO L225 Difference]: With dead ends: 184 [2020-11-30 01:17:12,636 INFO L226 Difference]: Without dead ends: 184 [2020-11-30 01:17:12,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:17:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-30 01:17:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 132. [2020-11-30 01:17:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-30 01:17:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2020-11-30 01:17:12,643 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 25 [2020-11-30 01:17:12,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:12,644 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2020-11-30 01:17:12,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:17:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2020-11-30 01:17:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:17:12,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:12,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:12,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-30 01:17:12,646 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:12,647 INFO L82 PathProgramCache]: Analyzing trace with hash 832417806, now seen corresponding path program 1 times [2020-11-30 01:17:12,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:12,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961853405] [2020-11-30 01:17:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:12,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961853405] [2020-11-30 01:17:12,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:17:12,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 01:17:12,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99654584] [2020-11-30 01:17:12,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:17:12,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:17:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:17:12,890 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand 10 states. [2020-11-30 01:17:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:13,395 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2020-11-30 01:17:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:17:13,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-30 01:17:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:13,401 INFO L225 Difference]: With dead ends: 148 [2020-11-30 01:17:13,401 INFO L226 Difference]: Without dead ends: 148 [2020-11-30 01:17:13,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:17:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-30 01:17:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2020-11-30 01:17:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-30 01:17:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2020-11-30 01:17:13,407 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 26 [2020-11-30 01:17:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:13,407 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2020-11-30 01:17:13,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:17:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2020-11-30 01:17:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:17:13,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:13,408 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:13,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-30 01:17:13,415 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:13,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659237, now seen corresponding path program 1 times [2020-11-30 01:17:13,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:13,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979781158] [2020-11-30 01:17:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:13,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979781158] [2020-11-30 01:17:13,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302435822] [2020-11-30 01:17:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:13,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-30 01:17:13,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:13,985 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-11-30 01:17:13,986 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,015 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,015 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:17:14,068 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_48|], 3=[|v_#valid_58|]} [2020-11-30 01:17:14,154 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-11-30 01:17:14,154 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,264 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-30 01:17:14,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,321 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,322 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-11-30 01:17:14,323 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,351 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2020-11-30 01:17:14,351 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,352 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:26 [2020-11-30 01:17:14,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:17:14,419 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,439 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,439 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:38 [2020-11-30 01:17:14,622 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 56 [2020-11-30 01:17:14,624 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,680 INFO L625 ElimStorePlain]: treesize reduction 24, result has 60.7 percent of original size [2020-11-30 01:17:14,680 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:37 [2020-11-30 01:17:14,766 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2020-11-30 01:17:14,766 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:14,816 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-11-30 01:17:14,818 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,840 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,841 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,841 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:35 [2020-11-30 01:17:14,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:14,953 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:14,954 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 91 [2020-11-30 01:17:14,961 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-11-30 01:17:14,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:17:14,963 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:14,998 INFO L625 ElimStorePlain]: treesize reduction 60, result has 40.0 percent of original size [2020-11-30 01:17:15,001 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:17:15,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:40 [2020-11-30 01:17:15,186 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:15,186 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2020-11-30 01:17:15,188 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:15,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:15,213 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:17:15,214 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:15 [2020-11-30 01:17:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:15,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:17:15,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2020-11-30 01:17:15,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571023415] [2020-11-30 01:17:15,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-30 01:17:15,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-30 01:17:15,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:17:15,360 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand 22 states. [2020-11-30 01:17:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:16,790 INFO L93 Difference]: Finished difference Result 230 states and 258 transitions. [2020-11-30 01:17:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 01:17:16,790 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-11-30 01:17:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:16,792 INFO L225 Difference]: With dead ends: 230 [2020-11-30 01:17:16,792 INFO L226 Difference]: Without dead ends: 230 [2020-11-30 01:17:16,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2020-11-30 01:17:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-30 01:17:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 155. [2020-11-30 01:17:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-30 01:17:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-11-30 01:17:16,801 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 28 [2020-11-30 01:17:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:16,801 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-11-30 01:17:16,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-30 01:17:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-11-30 01:17:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:17:16,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:16,803 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:17,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-30 01:17:17,021 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:17,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659238, now seen corresponding path program 1 times [2020-11-30 01:17:17,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:17,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56643735] [2020-11-30 01:17:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:17,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56643735] [2020-11-30 01:17:17,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247103942] [2020-11-30 01:17:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:17,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-30 01:17:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:17,533 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-11-30 01:17:17,533 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,538 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:17:17,550 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_49|], 1=[|v_#valid_60|]} [2020-11-30 01:17:17,563 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-11-30 01:17:17,563 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,602 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,603 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-11-30 01:17:17,604 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,615 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,615 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2020-11-30 01:17:17,639 INFO L384 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 11 treesize of output 7 [2020-11-30 01:17:17,639 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,657 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:17:17,657 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,669 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,670 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2020-11-30 01:17:17,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:17,831 INFO L384 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 19 treesize of output 18 [2020-11-30 01:17:17,832 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,889 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:17,889 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 51 [2020-11-30 01:17:17,890 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,926 INFO L625 ElimStorePlain]: treesize reduction 24, result has 63.1 percent of original size [2020-11-30 01:17:17,926 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:17,927 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:41 [2020-11-30 01:17:18,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:18,131 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-11-30 01:17:18,132 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:18,173 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-11-30 01:17:18,175 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,197 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:86, output treesize:48 [2020-11-30 01:17:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:18,275 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2020-11-30 01:17:18,277 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,303 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:18,335 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,335 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 105 [2020-11-30 01:17:18,339 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-11-30 01:17:18,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-11-30 01:17:18,341 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,410 INFO L625 ElimStorePlain]: treesize reduction 60, result has 50.4 percent of original size [2020-11-30 01:17:18,412 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:17:18,413 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:123, output treesize:61 [2020-11-30 01:17:18,560 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,560 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2020-11-30 01:17:18,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,586 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-11-30 01:17:18,594 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:18,619 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:18,619 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:75, output treesize:14 [2020-11-30 01:17:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:18,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:17:18,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2020-11-30 01:17:18,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69492580] [2020-11-30 01:17:18,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 01:17:18,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:18,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 01:17:18,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:17:18,648 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 18 states. [2020-11-30 01:17:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:19,739 INFO L93 Difference]: Finished difference Result 226 states and 261 transitions. [2020-11-30 01:17:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 01:17:19,740 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 28 [2020-11-30 01:17:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:19,741 INFO L225 Difference]: With dead ends: 226 [2020-11-30 01:17:19,742 INFO L226 Difference]: Without dead ends: 226 [2020-11-30 01:17:19,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-11-30 01:17:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-30 01:17:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 167. [2020-11-30 01:17:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 01:17:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2020-11-30 01:17:19,750 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 28 [2020-11-30 01:17:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:19,750 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2020-11-30 01:17:19,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 01:17:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2020-11-30 01:17:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:17:19,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:19,751 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:19,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-30 01:17:19,977 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash -752289896, now seen corresponding path program 1 times [2020-11-30 01:17:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612714148] [2020-11-30 01:17:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 01:17:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:20,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612714148] [2020-11-30 01:17:20,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141996786] [2020-11-30 01:17:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:17:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:17:20,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 01:17:20,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:17:20,525 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-11-30 01:17:20,526 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,530 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,531 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,531 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 01:17:20,541 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_50|], 1=[|v_#valid_62|]} [2020-11-30 01:17:20,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 01:17:20,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,587 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,587 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-11-30 01:17:20,588 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,597 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,597 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-11-30 01:17:20,634 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:17:20,635 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,656 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:32 [2020-11-30 01:17:20,803 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,803 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 55 [2020-11-30 01:17:20,805 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,850 INFO L625 ElimStorePlain]: treesize reduction 24, result has 56.4 percent of original size [2020-11-30 01:17:20,851 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,851 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:31 [2020-11-30 01:17:20,916 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 01:17:20,917 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:20,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-11-30 01:17:20,957 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:20,987 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:20,988 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:29 [2020-11-30 01:17:21,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:17:21,111 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:21,112 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 90 [2020-11-30 01:17:21,115 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-11-30 01:17:21,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:17:21,116 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:21,168 INFO L625 ElimStorePlain]: treesize reduction 32, result has 51.5 percent of original size [2020-11-30 01:17:21,169 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 01:17:21,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:34 [2020-11-30 01:17:21,272 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:21,273 INFO L384 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2020-11-30 01:17:21,274 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:17:21,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:17:21,287 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:17:21,287 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:4 [2020-11-30 01:17:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:17:21,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:17:21,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2020-11-30 01:17:21,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423828087] [2020-11-30 01:17:21,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-30 01:17:21,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:17:21,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-30 01:17:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-11-30 01:17:21,296 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand 20 states. [2020-11-30 01:17:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:22,316 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2020-11-30 01:17:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 01:17:22,317 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2020-11-30 01:17:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:22,318 INFO L225 Difference]: With dead ends: 225 [2020-11-30 01:17:22,318 INFO L226 Difference]: Without dead ends: 225 [2020-11-30 01:17:22,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-11-30 01:17:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-11-30 01:17:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 167. [2020-11-30 01:17:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 01:17:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2020-11-30 01:17:22,325 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 29 [2020-11-30 01:17:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:22,325 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2020-11-30 01:17:22,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-30 01:17:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2020-11-30 01:17:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:17:22,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:22,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:22,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-30 01:17:22,545 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-11-30 01:17:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash -542291407, now seen corresponding path program 1 times [2020-11-30 01:17:22,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:17:22,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020806951] [2020-11-30 01:17:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:17:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:17:22,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:17:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:17:22,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:17:22,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:17:22,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:17:22,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-30 01:17:22,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:17:22 BoogieIcfgContainer [2020-11-30 01:17:22,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:17:22,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:17:22,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:17:22,733 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:17:22,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:55" (3/4) ... [2020-11-30 01:17:22,737 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:17:22,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a8fb4db8-0f4a-4231-b8db-04bc2386c01b/bin/uautomizer/witness.graphml [2020-11-30 01:17:22,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:17:22,811 INFO L168 Benchmark]: Toolchain (without parser) took 29666.74 ms. Allocated memory was 92.3 MB in the beginning and 247.5 MB in the end (delta: 155.2 MB). Free memory was 64.3 MB in the beginning and 185.0 MB in the end (delta: -120.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,811 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:17:22,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.01 ms. Allocated memory is still 92.3 MB. Free memory was 64.1 MB in the beginning and 58.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,815 INFO L168 Benchmark]: Boogie Preprocessor took 104.18 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 55.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,816 INFO L168 Benchmark]: RCFGBuilder took 1610.79 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 55.8 MB in the beginning and 55.9 MB in the end (delta: -86.5 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,816 INFO L168 Benchmark]: TraceAbstraction took 27190.00 ms. Allocated memory was 115.3 MB in the beginning and 247.5 MB in the end (delta: 132.1 MB). Free memory was 55.9 MB in the beginning and 187.1 MB in the end (delta: -131.2 MB). Peak memory consumption was 411.0 kB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,817 INFO L168 Benchmark]: Witness Printer took 76.95 ms. Allocated memory is still 247.5 MB. Free memory was 187.1 MB in the beginning and 185.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:22,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 672.01 ms. Allocated memory is still 92.3 MB. Free memory was 64.1 MB in the beginning and 58.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.18 ms. Allocated memory is still 92.3 MB. Free memory was 58.6 MB in the beginning and 55.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1610.79 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 55.8 MB in the beginning and 55.9 MB in the end (delta: -86.5 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27190.00 ms. Allocated memory was 115.3 MB in the beginning and 247.5 MB in the end (delta: 132.1 MB). Free memory was 55.9 MB in the beginning and 187.1 MB in the end (delta: -131.2 MB). Peak memory consumption was 411.0 kB. Max. memory is 16.1 GB. * Witness Printer took 76.95 ms. Allocated memory is still 247.5 MB. Free memory was 187.1 MB in the beginning and 185.0 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: - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L997] head->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1027] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1032] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-circular-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 44 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.0s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1741 SDtfs, 4670 SDslu, 5875 SDs, 0 SdLazy, 9228 SolverSat, 537 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 888 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 565 ConstructedInterpolants, 7 QuantifiedInterpolants, 143551 SizeOfPredicates, 37 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 28 InterpolantComputations, 22 PerfectInterpolantSequences, 0/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...