./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD --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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:05:00,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:00,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:00,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:00,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:00,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:00,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:00,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:00,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:00,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:00,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:00,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:00,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:00,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:00,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:00,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:00,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:00,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:00,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:00,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:00,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:00,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:00,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:00,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:00,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:00,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:00,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:00,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:00,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:00,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:00,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:00,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:00,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:00,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:00,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:00,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:00,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:00,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:00,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:00,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:00,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:00,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 23:05:00,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:00,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:00,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:00,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:00,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:00,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:00,235 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:00,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:00,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:00,236 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:05:00,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:05:00,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:00,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:00,238 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:05:00,238 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:05:00,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:05:00,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:05:00,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:00,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:00,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:00,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:00,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:05:00,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:00,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:00,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:05:00,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:05:00,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:05:00,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:00,242 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_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2021-10-28 23:05:00,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:00,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:00,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:00,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:00,539 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:00,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/heap-manipulation/tree-4.i [2021-10-28 23:05:00,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/data/087e86d42/1999441993084b69bb63910095009813/FLAG026415397 [2021-10-28 23:05:01,134 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:01,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/sv-benchmarks/c/heap-manipulation/tree-4.i [2021-10-28 23:05:01,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/data/087e86d42/1999441993084b69bb63910095009813/FLAG026415397 [2021-10-28 23:05:01,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/data/087e86d42/1999441993084b69bb63910095009813 [2021-10-28 23:05:01,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:01,443 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:05:01,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:01,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:01,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:01,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:01,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66215209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01, skipping insertion in model container [2021-10-28 23:05:01,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:01,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:01,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:01,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2021-10-28 23:05:01,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:01,814 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:01,872 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2021-10-28 23:05:01,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:01,939 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01 WrapperNode [2021-10-28 23:05:01,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:01,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:01,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:01,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:01,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:01,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:01,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:01,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:02,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:02,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:02,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:02,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:02,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:02,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:02,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:02,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (1/1) ... [2021-10-28 23:05:02,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:05:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:02,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:02,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:02,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:05:02,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:05:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:05:02,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:05:02,165 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-10-28 23:05:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2021-10-28 23:05:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2021-10-28 23:05:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2021-10-28 23:05:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:05:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:05:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:05:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:05:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:05:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:05:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:05:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:05:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:05:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:05:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:05:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:05:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:05:02,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:05:02,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:05:02,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:05:02,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:05:02,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:05:02,171 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:05:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:05:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:05:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:05:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:05:02,172 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:05:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:05:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:05:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:05:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:05:02,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:05:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:05:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:05:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:05:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:05:02,174 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:05:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:05:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:05:02,175 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:05:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:05:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:05:02,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:05:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:05:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:05:02,177 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:05:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:05:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:05:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:05:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:05:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:05:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:05:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:05:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:05:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:05:02,180 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:05:02,180 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:05:02,180 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:05:02,181 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:05:02,181 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:05:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:05:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:05:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:05:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:05:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:05:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:05:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:05:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:05:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:05:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:05:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:05:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:05:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:05:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:05:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:05:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:05:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:05:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:05:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:05:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:05:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:05:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:05:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:05:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:05:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:05:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:05:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:05:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:05:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:05:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:05:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:05:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:05:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:05:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:05:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:05:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:05:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:05:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:05:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:05:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:05:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:05:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:05:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:05:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:05:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:05:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:05:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:05:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:05:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:05:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:05:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:05:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-10-28 23:05:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2021-10-28 23:05:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:05:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:05:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2021-10-28 23:05:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:05:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:05:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:05:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2021-10-28 23:05:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:05:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:05:02,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:05:02,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:05:02,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:02,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:02,968 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-28 23:05:02,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:02 BoogieIcfgContainer [2021-10-28 23:05:02,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:02,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:05:02,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:05:02,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:05:02,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:05:01" (1/3) ... [2021-10-28 23:05:02,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cf8b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:02, skipping insertion in model container [2021-10-28 23:05:02,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:01" (2/3) ... [2021-10-28 23:05:02,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cf8b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:05:02, skipping insertion in model container [2021-10-28 23:05:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:02" (3/3) ... [2021-10-28 23:05:02,985 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2021-10-28 23:05:02,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:05:02,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-28 23:05:03,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:05:03,059 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:05:03,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-28 23:05:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 84 states have (on average 2.107142857142857) internal successors, (177), 152 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 23:05:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:05:03,094 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:03,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:03,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting create_treeErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -557652933, now seen corresponding path program 1 times [2021-10-28 23:05:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:03,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984047075] [2021-10-28 23:05:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:03,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:03,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:03,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984047075] [2021-10-28 23:05:03,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984047075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:03,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:03,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:05:03,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105059202] [2021-10-28 23:05:03,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:05:03,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:05:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:05:03,408 INFO L87 Difference]: Start difference. First operand has 164 states, 84 states have (on average 2.107142857142857) internal successors, (177), 152 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:03,844 INFO L93 Difference]: Finished difference Result 216 states and 237 transitions. [2021-10-28 23:05:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:05:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:05:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:03,862 INFO L225 Difference]: With dead ends: 216 [2021-10-28 23:05:03,862 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 23:05:03,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:05:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 23:05:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 169. [2021-10-28 23:05:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 91 states have (on average 1.901098901098901) internal successors, (173), 157 states have internal predecessors, (173), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:05:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 186 transitions. [2021-10-28 23:05:03,940 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 186 transitions. Word has length 10 [2021-10-28 23:05:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:03,940 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 186 transitions. [2021-10-28 23:05:03,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 186 transitions. [2021-10-28 23:05:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:05:03,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:03,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:03,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:05:03,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_treeErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash -108387509, now seen corresponding path program 1 times [2021-10-28 23:05:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:03,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169111428] [2021-10-28 23:05:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:03,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:04,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:04,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169111428] [2021-10-28 23:05:04,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169111428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:04,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:04,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:05:04,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191976756] [2021-10-28 23:05:04,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:05:04,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:05:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:05:04,088 INFO L87 Difference]: Start difference. First operand 169 states and 186 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:04,582 INFO L93 Difference]: Finished difference Result 209 states and 227 transitions. [2021-10-28 23:05:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:05:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:05:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:04,591 INFO L225 Difference]: With dead ends: 209 [2021-10-28 23:05:04,591 INFO L226 Difference]: Without dead ends: 209 [2021-10-28 23:05:04,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-28 23:05:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 169. [2021-10-28 23:05:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 91 states have (on average 1.8571428571428572) internal successors, (169), 157 states have internal predecessors, (169), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:05:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-28 23:05:04,603 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 182 transitions. Word has length 11 [2021-10-28 23:05:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:04,628 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-28 23:05:04,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2021-10-28 23:05:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:05:04,629 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:04,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:04,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:05:04,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_treeErr0REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -108386450, now seen corresponding path program 1 times [2021-10-28 23:05:04,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:04,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447270848] [2021-10-28 23:05:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:04,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:04,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:04,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447270848] [2021-10-28 23:05:04,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447270848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:04,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:04,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:05:04,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189946460] [2021-10-28 23:05:04,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:05:04,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:05:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:05:04,764 INFO L87 Difference]: Start difference. First operand 169 states and 182 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:05,144 INFO L93 Difference]: Finished difference Result 206 states and 225 transitions. [2021-10-28 23:05:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:05:05,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:05:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:05,150 INFO L225 Difference]: With dead ends: 206 [2021-10-28 23:05:05,150 INFO L226 Difference]: Without dead ends: 206 [2021-10-28 23:05:05,150 INFO L786 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 [2021-10-28 23:05:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-28 23:05:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 162. [2021-10-28 23:05:05,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 93 states have (on average 1.7634408602150538) internal successors, (164), 150 states have internal predecessors, (164), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:05:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-10-28 23:05:05,174 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 11 [2021-10-28 23:05:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:05,174 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-10-28 23:05:05,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-10-28 23:05:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:05:05,175 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:05,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:05,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:05:05,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting create_treeErr1REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash -108386449, now seen corresponding path program 1 times [2021-10-28 23:05:05,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:05,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724241131] [2021-10-28 23:05:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:05,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:05,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:05,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:05,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724241131] [2021-10-28 23:05:05,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724241131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:05,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:05,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:05:05,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093223583] [2021-10-28 23:05:05,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:05:05,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:05:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:05:05,312 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:05,708 INFO L93 Difference]: Finished difference Result 225 states and 244 transitions. [2021-10-28 23:05:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:05:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:05:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:05,711 INFO L225 Difference]: With dead ends: 225 [2021-10-28 23:05:05,711 INFO L226 Difference]: Without dead ends: 225 [2021-10-28 23:05:05,711 INFO L786 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 [2021-10-28 23:05:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-28 23:05:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 173. [2021-10-28 23:05:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 108 states have (on average 1.6851851851851851) internal successors, (182), 161 states have internal predecessors, (182), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:05:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2021-10-28 23:05:05,722 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 11 [2021-10-28 23:05:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:05,722 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2021-10-28 23:05:05,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2021-10-28 23:05:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:05:05,723 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:05,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:05,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:05:05,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting create_treeErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:05,725 INFO L85 PathProgramCache]: Analyzing trace with hash 874689698, now seen corresponding path program 1 times [2021-10-28 23:05:05,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:05,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775907727] [2021-10-28 23:05:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:05,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:05,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:05,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775907727] [2021-10-28 23:05:05,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775907727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:05,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:05,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:05:05,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777617103] [2021-10-28 23:05:05,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:05:05,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:05:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:05:05,787 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:06,081 INFO L93 Difference]: Finished difference Result 220 states and 247 transitions. [2021-10-28 23:05:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:05:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 23:05:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:06,083 INFO L225 Difference]: With dead ends: 220 [2021-10-28 23:05:06,083 INFO L226 Difference]: Without dead ends: 220 [2021-10-28 23:05:06,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-28 23:05:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 177. [2021-10-28 23:05:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 112 states have (on average 1.6607142857142858) internal successors, (186), 165 states have internal predecessors, (186), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 23:05:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 199 transitions. [2021-10-28 23:05:06,099 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 199 transitions. Word has length 14 [2021-10-28 23:05:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:06,099 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 199 transitions. [2021-10-28 23:05:06,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 199 transitions. [2021-10-28 23:05:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:05:06,101 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:06,101 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:06,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:05:06,101 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash -388091640, now seen corresponding path program 1 times [2021-10-28 23:05:06,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:06,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991280389] [2021-10-28 23:05:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:06,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:06,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:06,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:06,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991280389] [2021-10-28 23:05:06,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991280389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:06,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:06,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:06,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859929310] [2021-10-28 23:05:06,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:06,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:06,285 INFO L87 Difference]: Start difference. First operand 177 states and 199 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:06,943 INFO L93 Difference]: Finished difference Result 220 states and 243 transitions. [2021-10-28 23:05:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:05:06,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-28 23:05:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:06,945 INFO L225 Difference]: With dead ends: 220 [2021-10-28 23:05:06,945 INFO L226 Difference]: Without dead ends: 213 [2021-10-28 23:05:06,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:05:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-28 23:05:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 170. [2021-10-28 23:05:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.6886792452830188) internal successors, (179), 159 states have internal predecessors, (179), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 191 transitions. [2021-10-28 23:05:06,951 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 191 transitions. Word has length 21 [2021-10-28 23:05:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:06,951 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 191 transitions. [2021-10-28 23:05:06,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 191 transitions. [2021-10-28 23:05:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:05:06,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:06,952 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:06,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:05:06,953 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting create_treeErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 53276323, now seen corresponding path program 1 times [2021-10-28 23:05:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:06,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721372522] [2021-10-28 23:05:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:06,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:07,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:07,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721372522] [2021-10-28 23:05:07,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721372522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:07,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835058163] [2021-10-28 23:05:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:07,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:07,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:07,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:05:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:07,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:05:07,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:07,320 INFO L388 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 [2021-10-28 23:05:07,410 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 23:05:07,411 INFO L388 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 21 [2021-10-28 23:05:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835058163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-28 23:05:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667812971] [2021-10-28 23:05:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:05:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:05:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:05:07,582 INFO L87 Difference]: Start difference. First operand 170 states and 191 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:08,083 INFO L93 Difference]: Finished difference Result 222 states and 249 transitions. [2021-10-28 23:05:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:05:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:05:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:08,085 INFO L225 Difference]: With dead ends: 222 [2021-10-28 23:05:08,085 INFO L226 Difference]: Without dead ends: 222 [2021-10-28 23:05:08,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:05:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-28 23:05:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 169. [2021-10-28 23:05:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 106 states have (on average 1.679245283018868) internal successors, (178), 158 states have internal predecessors, (178), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2021-10-28 23:05:08,090 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 23 [2021-10-28 23:05:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:08,090 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2021-10-28 23:05:08,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2021-10-28 23:05:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:05:08,091 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:08,091 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:08,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:08,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:08,291 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_treeErr5REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 53276324, now seen corresponding path program 1 times [2021-10-28 23:05:08,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:08,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192480672] [2021-10-28 23:05:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:08,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:08,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:08,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192480672] [2021-10-28 23:05:08,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192480672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:08,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315038267] [2021-10-28 23:05:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:08,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:08,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:08,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:08,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:05:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:08,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:05:08,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:08,662 INFO L388 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 [2021-10-28 23:05:08,669 INFO L388 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 [2021-10-28 23:05:08,894 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:05:08,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 24 [2021-10-28 23:05:08,915 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:05:08,915 INFO L388 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 21 treesize of output 21 [2021-10-28 23:05:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:09,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315038267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:09,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:09,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-28 23:05:09,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902265022] [2021-10-28 23:05:09,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:05:09,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:05:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:09,099 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:09,732 INFO L93 Difference]: Finished difference Result 230 states and 249 transitions. [2021-10-28 23:05:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:05:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:05:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:09,734 INFO L225 Difference]: With dead ends: 230 [2021-10-28 23:05:09,735 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 23:05:09,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:05:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 23:05:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 168. [2021-10-28 23:05:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 106 states have (on average 1.669811320754717) internal successors, (177), 157 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2021-10-28 23:05:09,741 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 23 [2021-10-28 23:05:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:09,741 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2021-10-28 23:05:09,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2021-10-28 23:05:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:05:09,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:09,743 INFO L513 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] [2021-10-28 23:05:09,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:09,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:09,968 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_treeErr14REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash -190246733, now seen corresponding path program 1 times [2021-10-28 23:05:09,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:09,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850930096] [2021-10-28 23:05:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:09,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:05:10,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:10,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850930096] [2021-10-28 23:05:10,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850930096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:10,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:10,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:10,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092733502] [2021-10-28 23:05:10,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:05:10,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:10,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:10,041 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:10,443 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2021-10-28 23:05:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:05:10,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 23:05:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:10,446 INFO L225 Difference]: With dead ends: 205 [2021-10-28 23:05:10,446 INFO L226 Difference]: Without dead ends: 205 [2021-10-28 23:05:10,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-28 23:05:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 167. [2021-10-28 23:05:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 106 states have (on average 1.650943396226415) internal successors, (175), 156 states have internal predecessors, (175), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-10-28 23:05:10,453 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 26 [2021-10-28 23:05:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:10,454 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-10-28 23:05:10,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-10-28 23:05:10,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:05:10,455 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:10,456 INFO L513 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] [2021-10-28 23:05:10,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:05:10,456 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_treeErr15REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:10,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:10,457 INFO L85 PathProgramCache]: Analyzing trace with hash -190246732, now seen corresponding path program 1 times [2021-10-28 23:05:10,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:10,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930968904] [2021-10-28 23:05:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:10,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:05:10,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:10,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930968904] [2021-10-28 23:05:10,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930968904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:10,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:10,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:10,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822721239] [2021-10-28 23:05:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:05:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:10,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:10,560 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:10,998 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-10-28 23:05:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:05:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 23:05:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:11,001 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:05:11,001 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 23:05:11,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:05:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 23:05:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 166. [2021-10-28 23:05:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.6320754716981132) internal successors, (173), 155 states have internal predecessors, (173), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-10-28 23:05:11,008 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 26 [2021-10-28 23:05:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:11,008 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-10-28 23:05:11,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-10-28 23:05:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:05:11,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:11,010 INFO L513 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] [2021-10-28 23:05:11,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:05:11,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1822618347, now seen corresponding path program 1 times [2021-10-28 23:05:11,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:11,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141126732] [2021-10-28 23:05:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:11,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:11,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:11,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141126732] [2021-10-28 23:05:11,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141126732] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:11,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:11,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:11,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682690937] [2021-10-28 23:05:11,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:05:11,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:11,084 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:11,469 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2021-10-28 23:05:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:05:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-10-28 23:05:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:11,470 INFO L225 Difference]: With dead ends: 210 [2021-10-28 23:05:11,471 INFO L226 Difference]: Without dead ends: 210 [2021-10-28 23:05:11,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-28 23:05:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 165. [2021-10-28 23:05:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.619047619047619) internal successors, (170), 154 states have internal predecessors, (170), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2021-10-28 23:05:11,477 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 26 [2021-10-28 23:05:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:11,478 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2021-10-28 23:05:11,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2021-10-28 23:05:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:05:11,479 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:11,479 INFO L513 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] [2021-10-28 23:05:11,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:05:11,480 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_treeErr18REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1716475476, now seen corresponding path program 1 times [2021-10-28 23:05:11,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:11,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451690959] [2021-10-28 23:05:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:11,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:11,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:11,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451690959] [2021-10-28 23:05:11,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451690959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:11,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:11,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:11,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490630600] [2021-10-28 23:05:11,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:05:11,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:05:11,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:05:11,617 INFO L87 Difference]: Start difference. First operand 165 states and 182 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:12,267 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2021-10-28 23:05:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:05:12,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:05:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:12,269 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:05:12,269 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 23:05:12,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:05:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 23:05:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2021-10-28 23:05:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.6095238095238096) internal successors, (169), 154 states have internal predecessors, (169), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2021-10-28 23:05:12,275 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 29 [2021-10-28 23:05:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:12,275 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2021-10-28 23:05:12,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2021-10-28 23:05:12,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:05:12,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:12,277 INFO L513 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] [2021-10-28 23:05:12,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:05:12,277 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_treeErr19REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:12,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1716475477, now seen corresponding path program 1 times [2021-10-28 23:05:12,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:12,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38972357] [2021-10-28 23:05:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:12,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:12,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:12,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38972357] [2021-10-28 23:05:12,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38972357] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:12,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:12,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:05:12,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641572534] [2021-10-28 23:05:12,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:05:12,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:05:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:05:12,429 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:13,003 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2021-10-28 23:05:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:05:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:05:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:13,005 INFO L225 Difference]: With dead ends: 203 [2021-10-28 23:05:13,005 INFO L226 Difference]: Without dead ends: 203 [2021-10-28 23:05:13,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:05:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-28 23:05:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 165. [2021-10-28 23:05:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.6) internal successors, (168), 154 states have internal predecessors, (168), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2021-10-28 23:05:13,011 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 29 [2021-10-28 23:05:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:13,012 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2021-10-28 23:05:13,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2021-10-28 23:05:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:05:13,013 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:13,013 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:13,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:05:13,014 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_treeErr22REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:13,014 INFO L85 PathProgramCache]: Analyzing trace with hash -359646150, now seen corresponding path program 1 times [2021-10-28 23:05:13,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:13,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71383145] [2021-10-28 23:05:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:13,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:13,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71383145] [2021-10-28 23:05:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71383145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:13,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:13,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:05:13,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752300287] [2021-10-28 23:05:13,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:05:13,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:05:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:05:13,168 INFO L87 Difference]: Start difference. First operand 165 states and 180 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:13,960 INFO L93 Difference]: Finished difference Result 204 states and 220 transitions. [2021-10-28 23:05:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:05:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:05:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:13,965 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:05:13,965 INFO L226 Difference]: Without dead ends: 204 [2021-10-28 23:05:13,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:05:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-28 23:05:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2021-10-28 23:05:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.5904761904761904) internal successors, (167), 154 states have internal predecessors, (167), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2021-10-28 23:05:13,977 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 32 [2021-10-28 23:05:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:13,978 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2021-10-28 23:05:13,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2021-10-28 23:05:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:05:13,979 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:13,979 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:13,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:05:13,979 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_treeErr23REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash -359646149, now seen corresponding path program 1 times [2021-10-28 23:05:13,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:13,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941360050] [2021-10-28 23:05:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:13,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:14,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:14,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941360050] [2021-10-28 23:05:14,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941360050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:14,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:14,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:05:14,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037060842] [2021-10-28 23:05:14,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:05:14,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:05:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:05:14,198 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:14,901 INFO L93 Difference]: Finished difference Result 203 states and 219 transitions. [2021-10-28 23:05:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:05:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:05:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:14,904 INFO L225 Difference]: With dead ends: 203 [2021-10-28 23:05:14,904 INFO L226 Difference]: Without dead ends: 203 [2021-10-28 23:05:14,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:05:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-28 23:05:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 165. [2021-10-28 23:05:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 154 states have internal predecessors, (166), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-10-28 23:05:14,910 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 32 [2021-10-28 23:05:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-10-28 23:05:14,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-10-28 23:05:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 23:05:14,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:14,912 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:05:14,913 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting create_treeErr26REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1725030331, now seen corresponding path program 1 times [2021-10-28 23:05:14,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:14,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833022102] [2021-10-28 23:05:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:14,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:15,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:15,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833022102] [2021-10-28 23:05:15,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833022102] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:15,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:15,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:05:15,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098709450] [2021-10-28 23:05:15,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:05:15,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:05:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:05:15,108 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:15,724 INFO L93 Difference]: Finished difference Result 205 states and 219 transitions. [2021-10-28 23:05:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:05:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 23:05:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:15,727 INFO L225 Difference]: With dead ends: 205 [2021-10-28 23:05:15,727 INFO L226 Difference]: Without dead ends: 205 [2021-10-28 23:05:15,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:05:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-28 23:05:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-10-28 23:05:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 154 states have internal predecessors, (165), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2021-10-28 23:05:15,733 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 35 [2021-10-28 23:05:15,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:15,733 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2021-10-28 23:05:15,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2021-10-28 23:05:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 23:05:15,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:15,734 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:15,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:05:15,735 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting create_treeErr27REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1725030332, now seen corresponding path program 1 times [2021-10-28 23:05:15,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:15,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935198910] [2021-10-28 23:05:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:15,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:15,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:15,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935198910] [2021-10-28 23:05:15,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935198910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:15,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:15,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:05:15,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579818064] [2021-10-28 23:05:15,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:05:15,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:05:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:05:15,981 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:16,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:16,671 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2021-10-28 23:05:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:05:16,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 23:05:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:16,673 INFO L225 Difference]: With dead ends: 203 [2021-10-28 23:05:16,674 INFO L226 Difference]: Without dead ends: 203 [2021-10-28 23:05:16,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:05:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-28 23:05:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 165. [2021-10-28 23:05:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.561904761904762) internal successors, (164), 154 states have internal predecessors, (164), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2021-10-28 23:05:16,679 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 35 [2021-10-28 23:05:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:16,679 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2021-10-28 23:05:16,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:05:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2021-10-28 23:05:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 23:05:16,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:16,681 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:16,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:05:16,682 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting create_treeErr10REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:16,682 INFO L85 PathProgramCache]: Analyzing trace with hash 11285986, now seen corresponding path program 1 times [2021-10-28 23:05:16,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:16,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340723352] [2021-10-28 23:05:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:16,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:17,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:17,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340723352] [2021-10-28 23:05:17,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340723352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:17,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326493448] [2021-10-28 23:05:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:17,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:17,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:17,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:05:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-28 23:05:17,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:17,290 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-10-28 23:05:17,290 INFO L388 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 2 case distinctions, treesize of input 21 treesize of output 24 [2021-10-28 23:05:17,470 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-10-28 23:05:17,470 INFO L388 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-10-28 23:05:17,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:05:17,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:05:17,773 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 23:05:17,774 INFO L388 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 29 treesize of output 13 [2021-10-28 23:05:17,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:05:17,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 23:05:17,966 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-28 23:05:17,966 INFO L388 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 23 treesize of output 22 [2021-10-28 23:05:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:05:17,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-28 23:05:18,090 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 23:05:18,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 49 [2021-10-28 23:05:18,238 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-10-28 23:05:18,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 52 treesize of output 54 [2021-10-28 23:05:18,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:05:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:05:18,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:05:18,285 INFO L388 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 30 treesize of output 32 [2021-10-28 23:05:18,702 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-10-28 23:05:18,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 93 [2021-10-28 23:05:18,734 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-28 23:05:18,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 101 treesize of output 99 [2021-10-28 23:05:19,189 INFO L354 Elim1Store]: treesize reduction 188, result has 14.9 percent of original size [2021-10-28 23:05:19,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 135 treesize of output 114 [2021-10-28 23:05:19,227 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-28 23:05:19,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 128 [2021-10-28 23:05:23,744 INFO L354 Elim1Store]: treesize reduction 218, result has 15.8 percent of original size [2021-10-28 23:05:23,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 159 treesize of output 136 [2021-10-28 23:05:23,784 INFO L354 Elim1Store]: treesize reduction 190, result has 16.7 percent of original size [2021-10-28 23:05:23,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 118 [2021-10-28 23:05:24,104 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-10-28 23:05:24,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 111 [2021-10-28 23:05:24,130 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-10-28 23:05:24,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 119 treesize of output 117 [2021-10-28 23:05:24,155 INFO L354 Elim1Store]: treesize reduction 44, result has 27.9 percent of original size [2021-10-28 23:05:24,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 115 [2021-10-28 23:05:24,327 INFO L354 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2021-10-28 23:05:24,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 60 [2021-10-28 23:05:24,335 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 23:05:24,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 31 [2021-10-28 23:05:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:24,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326493448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:24,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:24,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 29 [2021-10-28 23:05:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642306824] [2021-10-28 23:05:24,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 23:05:24,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 23:05:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=679, Unknown=2, NotChecked=0, Total=812 [2021-10-28 23:05:24,353 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:44,963 INFO L93 Difference]: Finished difference Result 234 states and 248 transitions. [2021-10-28 23:05:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 23:05:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2021-10-28 23:05:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:44,965 INFO L225 Difference]: With dead ends: 234 [2021-10-28 23:05:44,966 INFO L226 Difference]: Without dead ends: 234 [2021-10-28 23:05:44,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=403, Invalid=2138, Unknown=9, NotChecked=0, Total=2550 [2021-10-28 23:05:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-28 23:05:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 191. [2021-10-28 23:05:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 131 states have (on average 1.4580152671755726) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2021-10-28 23:05:44,974 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 40 [2021-10-28 23:05:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:44,974 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2021-10-28 23:05:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2021-10-28 23:05:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 23:05:44,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:44,976 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:45,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 23:05:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:05:45,191 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1714624533, now seen corresponding path program 1 times [2021-10-28 23:05:45,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:45,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43484693] [2021-10-28 23:05:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:45,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:45,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:05:45,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:45,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43484693] [2021-10-28 23:05:45,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43484693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:45,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:45,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:05:45,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732329577] [2021-10-28 23:05:45,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:05:45,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:05:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:05:45,323 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:45,890 INFO L93 Difference]: Finished difference Result 230 states and 243 transitions. [2021-10-28 23:05:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:05:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-10-28 23:05:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:45,892 INFO L225 Difference]: With dead ends: 230 [2021-10-28 23:05:45,892 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 23:05:45,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:05:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 23:05:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 191. [2021-10-28 23:05:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 180 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2021-10-28 23:05:45,898 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 45 [2021-10-28 23:05:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:45,898 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2021-10-28 23:05:45,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2021-10-28 23:05:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 23:05:45,899 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:45,900 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:45,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:05:45,900 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2037935847, now seen corresponding path program 1 times [2021-10-28 23:05:45,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:45,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434868521] [2021-10-28 23:05:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:45,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:05:46,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:46,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434868521] [2021-10-28 23:05:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434868521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:46,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:46,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:05:46,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015512565] [2021-10-28 23:05:46,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:05:46,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:05:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:05:46,054 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:46,782 INFO L93 Difference]: Finished difference Result 253 states and 268 transitions. [2021-10-28 23:05:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:05:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2021-10-28 23:05:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:46,784 INFO L225 Difference]: With dead ends: 253 [2021-10-28 23:05:46,784 INFO L226 Difference]: Without dead ends: 253 [2021-10-28 23:05:46,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:05:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-28 23:05:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 191. [2021-10-28 23:05:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 180 states have internal predecessors, (189), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 200 transitions. [2021-10-28 23:05:46,791 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 200 transitions. Word has length 49 [2021-10-28 23:05:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:46,792 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 200 transitions. [2021-10-28 23:05:46,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 200 transitions. [2021-10-28 23:05:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 23:05:46,793 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:46,793 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:46,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:05:46,793 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr0REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:46,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:46,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1248564646, now seen corresponding path program 1 times [2021-10-28 23:05:46,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:46,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791536641] [2021-10-28 23:05:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:46,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:46,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:46,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791536641] [2021-10-28 23:05:46,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791536641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:46,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909626105] [2021-10-28 23:05:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:46,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:46,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:46,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:05:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:47,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:05:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:47,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909626105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:47,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 11 [2021-10-28 23:05:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145663462] [2021-10-28 23:05:47,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:05:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:05:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:05:47,396 INFO L87 Difference]: Start difference. First operand 191 states and 200 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:48,072 INFO L93 Difference]: Finished difference Result 229 states and 241 transitions. [2021-10-28 23:05:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:05:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-10-28 23:05:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:48,074 INFO L225 Difference]: With dead ends: 229 [2021-10-28 23:05:48,074 INFO L226 Difference]: Without dead ends: 229 [2021-10-28 23:05:48,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:05:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-28 23:05:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 189. [2021-10-28 23:05:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 133 states have (on average 1.413533834586466) internal successors, (188), 178 states have internal predecessors, (188), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2021-10-28 23:05:48,096 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 50 [2021-10-28 23:05:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:48,097 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2021-10-28 23:05:48,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:05:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2021-10-28 23:05:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 23:05:48,098 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:48,098 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:48,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:48,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 23:05:48,320 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr1REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1248564645, now seen corresponding path program 1 times [2021-10-28 23:05:48,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:48,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708276961] [2021-10-28 23:05:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:48,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:48,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:05:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:48,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:48,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708276961] [2021-10-28 23:05:48,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708276961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:48,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904307803] [2021-10-28 23:05:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:48,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:48,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:48,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:48,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:05:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:48,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:05:48,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:49,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904307803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:49,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:49,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-28 23:05:49,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446086402] [2021-10-28 23:05:49,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 23:05:49,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 23:05:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:05:49,424 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand has 20 states, 19 states have (on average 4.526315789473684) internal successors, (86), 14 states have internal predecessors, (86), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:05:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:50,646 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2021-10-28 23:05:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:05:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.526315789473684) internal successors, (86), 14 states have internal predecessors, (86), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-10-28 23:05:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:05:50,650 INFO L225 Difference]: With dead ends: 244 [2021-10-28 23:05:50,650 INFO L226 Difference]: Without dead ends: 244 [2021-10-28 23:05:50,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:05:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-28 23:05:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 191. [2021-10-28 23:05:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 135 states have (on average 1.4074074074074074) internal successors, (190), 180 states have internal predecessors, (190), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:05:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2021-10-28 23:05:50,658 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 50 [2021-10-28 23:05:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:05:50,658 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2021-10-28 23:05:50,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.526315789473684) internal successors, (86), 14 states have internal predecessors, (86), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:05:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2021-10-28 23:05:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 23:05:50,659 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:05:50,660 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:50,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:05:50,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 23:05:50,876 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting create_treeErr10REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:05:50,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1489839671, now seen corresponding path program 1 times [2021-10-28 23:05:50,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:50,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888865841] [2021-10-28 23:05:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:50,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:05:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:51,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:51,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888865841] [2021-10-28 23:05:51,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888865841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:51,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729413382] [2021-10-28 23:05:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:51,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:05:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:51,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:05:51,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:05:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:51,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-28 23:05:51,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:05:51,591 INFO L388 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 [2021-10-28 23:05:51,718 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 23:05:51,718 INFO L388 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 21 [2021-10-28 23:05:51,833 INFO L388 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 13 treesize of output 9 [2021-10-28 23:05:51,842 INFO L388 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 13 treesize of output 9 [2021-10-28 23:05:51,935 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-28 23:05:51,935 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-10-28 23:05:51,949 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-28 23:05:51,950 INFO L388 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 67 treesize of output 60 [2021-10-28 23:05:52,061 INFO L354 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2021-10-28 23:05:52,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 67 [2021-10-28 23:05:52,086 INFO L354 Elim1Store]: treesize reduction 104, result has 18.1 percent of original size [2021-10-28 23:05:52,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 76 treesize of output 63 [2021-10-28 23:05:52,227 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 23:05:52,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 70 [2021-10-28 23:05:52,249 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-28 23:05:52,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 79 treesize of output 81 [2021-10-28 23:05:52,367 INFO L354 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2021-10-28 23:05:52,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 45 [2021-10-28 23:05:52,510 INFO L354 Elim1Store]: treesize reduction 138, result has 18.8 percent of original size [2021-10-28 23:05:52,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 121 [2021-10-28 23:05:52,545 INFO L354 Elim1Store]: treesize reduction 108, result has 19.4 percent of original size [2021-10-28 23:05:52,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 89 [2021-10-28 23:05:52,927 INFO L354 Elim1Store]: treesize reduction 180, result has 15.5 percent of original size [2021-10-28 23:05:52,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 144 treesize of output 110 [2021-10-28 23:05:52,967 INFO L354 Elim1Store]: treesize reduction 178, result has 15.2 percent of original size [2021-10-28 23:05:52,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 137 [2021-10-28 23:05:53,387 INFO L354 Elim1Store]: treesize reduction 268, result has 13.0 percent of original size [2021-10-28 23:05:53,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 170 treesize of output 131 [2021-10-28 23:05:53,451 INFO L354 Elim1Store]: treesize reduction 272, result has 13.7 percent of original size [2021-10-28 23:05:53,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 166 [2021-10-28 23:05:57,986 INFO L354 Elim1Store]: treesize reduction 306, result has 13.6 percent of original size [2021-10-28 23:05:57,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 194 treesize of output 153 [2021-10-28 23:05:58,033 INFO L354 Elim1Store]: treesize reduction 318, result has 13.8 percent of original size [2021-10-28 23:05:58,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 169 treesize of output 156 [2021-10-28 23:05:58,320 INFO L354 Elim1Store]: treesize reduction 196, result has 14.4 percent of original size [2021-10-28 23:05:58,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 148 treesize of output 114 [2021-10-28 23:05:58,357 INFO L354 Elim1Store]: treesize reduction 190, result has 14.4 percent of original size [2021-10-28 23:05:58,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 141 [2021-10-28 23:05:58,581 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-10-28 23:05:58,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 155 treesize of output 89 [2021-10-28 23:05:58,595 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-10-28 23:05:58,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 50 [2021-10-28 23:05:58,799 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 23:05:58,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 42 [2021-10-28 23:05:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:58,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729413382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:05:58,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:05:58,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 34 [2021-10-28 23:05:58,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423583771] [2021-10-28 23:05:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 23:05:58,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 23:05:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1009, Unknown=2, NotChecked=0, Total=1190 [2021-10-28 23:05:58,925 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand has 35 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:06:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:19,459 INFO L93 Difference]: Finished difference Result 276 states and 291 transitions. [2021-10-28 23:06:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 23:06:19,459 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-10-28 23:06:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:19,461 INFO L225 Difference]: With dead ends: 276 [2021-10-28 23:06:19,461 INFO L226 Difference]: Without dead ends: 276 [2021-10-28 23:06:19,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=784, Invalid=3367, Unknown=9, NotChecked=0, Total=4160 [2021-10-28 23:06:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-28 23:06:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 194. [2021-10-28 23:06:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 138 states have (on average 1.4130434782608696) internal successors, (195), 183 states have internal predecessors, (195), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:06:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2021-10-28 23:06:19,470 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 50 [2021-10-28 23:06:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:19,470 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2021-10-28 23:06:19,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 34 states have internal predecessors, (89), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:06:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2021-10-28 23:06:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 23:06:19,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:19,471 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:19,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 23:06:19,684 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting create_treeErr11REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:06:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1489839672, now seen corresponding path program 1 times [2021-10-28 23:06:19,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:19,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824869617] [2021-10-28 23:06:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:19,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:06:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:20,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:20,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824869617] [2021-10-28 23:06:20,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824869617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:20,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012642957] [2021-10-28 23:06:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:20,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:06:20,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:06:20,168 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:06:20,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:06:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-28 23:06:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:20,599 INFO L388 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 [2021-10-28 23:06:20,604 INFO L388 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 [2021-10-28 23:06:20,731 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:06:20,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-10-28 23:06:20,754 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 23:06:20,755 INFO L388 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 21 [2021-10-28 23:06:20,849 INFO L388 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 13 treesize of output 9 [2021-10-28 23:06:20,879 INFO L388 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 13 treesize of output 9 [2021-10-28 23:06:20,982 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-10-28 23:06:20,982 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 70 [2021-10-28 23:06:20,993 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-10-28 23:06:20,994 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 78 [2021-10-28 23:06:21,120 INFO L354 Elim1Store]: treesize reduction 112, result has 18.2 percent of original size [2021-10-28 23:06:21,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 88 [2021-10-28 23:06:21,138 INFO L354 Elim1Store]: treesize reduction 104, result has 18.1 percent of original size [2021-10-28 23:06:21,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 81 [2021-10-28 23:06:21,318 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-10-28 23:06:21,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 91 [2021-10-28 23:06:21,340 INFO L354 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2021-10-28 23:06:21,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 99 [2021-10-28 23:06:21,450 INFO L354 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2021-10-28 23:06:21,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 45 [2021-10-28 23:06:21,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 28 [2021-10-28 23:06:21,642 INFO L354 Elim1Store]: treesize reduction 148, result has 18.7 percent of original size [2021-10-28 23:06:21,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 126 [2021-10-28 23:06:21,678 INFO L354 Elim1Store]: treesize reduction 138, result has 18.8 percent of original size [2021-10-28 23:06:21,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 149 [2021-10-28 23:06:22,105 INFO L354 Elim1Store]: treesize reduction 180, result has 15.5 percent of original size [2021-10-28 23:06:22,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 164 treesize of output 120 [2021-10-28 23:06:22,144 INFO L354 Elim1Store]: treesize reduction 178, result has 15.2 percent of original size [2021-10-28 23:06:22,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 157 [2021-10-28 23:06:22,618 INFO L354 Elim1Store]: treesize reduction 268, result has 13.0 percent of original size [2021-10-28 23:06:22,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 141 [2021-10-28 23:06:22,677 INFO L354 Elim1Store]: treesize reduction 272, result has 13.7 percent of original size [2021-10-28 23:06:22,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 186 [2021-10-28 23:06:27,175 INFO L354 Elim1Store]: treesize reduction 306, result has 13.6 percent of original size [2021-10-28 23:06:27,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 163 [2021-10-28 23:06:27,240 INFO L354 Elim1Store]: treesize reduction 318, result has 13.8 percent of original size [2021-10-28 23:06:27,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 189 treesize of output 176 [2021-10-28 23:06:27,553 INFO L354 Elim1Store]: treesize reduction 196, result has 14.4 percent of original size [2021-10-28 23:06:27,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 168 treesize of output 124 [2021-10-28 23:06:27,600 INFO L354 Elim1Store]: treesize reduction 190, result has 14.4 percent of original size [2021-10-28 23:06:27,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 161 [2021-10-28 23:06:27,824 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-10-28 23:06:27,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 180 treesize of output 104 [2021-10-28 23:06:27,832 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-10-28 23:06:27,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 65 [2021-10-28 23:06:28,106 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 23:06:28,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2021-10-28 23:06:28,124 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-28 23:06:28,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 57 [2021-10-28 23:06:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:28,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012642957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:28,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:06:28,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 34 [2021-10-28 23:06:28,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551886389] [2021-10-28 23:06:28,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 23:06:28,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 23:06:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1025, Unknown=2, NotChecked=0, Total=1190 [2021-10-28 23:06:28,231 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:06:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:38,200 INFO L93 Difference]: Finished difference Result 300 states and 316 transitions. [2021-10-28 23:06:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-28 23:06:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-10-28 23:06:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:38,203 INFO L225 Difference]: With dead ends: 300 [2021-10-28 23:06:38,203 INFO L226 Difference]: Without dead ends: 300 [2021-10-28 23:06:38,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1132, Invalid=5186, Unknown=2, NotChecked=0, Total=6320 [2021-10-28 23:06:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-28 23:06:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 209. [2021-10-28 23:06:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 153 states have (on average 1.4052287581699345) internal successors, (215), 198 states have internal predecessors, (215), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:06:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2021-10-28 23:06:38,212 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 50 [2021-10-28 23:06:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:38,213 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2021-10-28 23:06:38,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:06:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2021-10-28 23:06:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:06:38,214 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:38,214 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:38,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:06:38,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 23:06:38,428 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting inspectErr7REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:06:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1574744257, now seen corresponding path program 1 times [2021-10-28 23:06:38,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:38,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192236859] [2021-10-28 23:06:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:38,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:06:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:06:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:38,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:38,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192236859] [2021-10-28 23:06:38,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192236859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:38,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76311116] [2021-10-28 23:06:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:38,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:06:38,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:06:38,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:06:38,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:06:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:39,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 23:06:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:39,287 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-10-28 23:06:39,288 INFO L388 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 2 case distinctions, treesize of input 21 treesize of output 24 [2021-10-28 23:06:40,000 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:06:40,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2021-10-28 23:06:40,284 INFO L354 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2021-10-28 23:06:40,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 72 [2021-10-28 23:06:40,617 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 23:06:40,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 27 [2021-10-28 23:06:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:40,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76311116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:40,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:06:40,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2021-10-28 23:06:40,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753173076] [2021-10-28 23:06:40,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-28 23:06:40,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:40,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-28 23:06:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:06:40,649 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 22 states have internal predecessors, (92), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:06:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:06:43,686 INFO L93 Difference]: Finished difference Result 311 states and 339 transitions. [2021-10-28 23:06:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 23:06:43,687 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 22 states have internal predecessors, (92), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2021-10-28 23:06:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:06:43,688 INFO L225 Difference]: With dead ends: 311 [2021-10-28 23:06:43,688 INFO L226 Difference]: Without dead ends: 311 [2021-10-28 23:06:43,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=314, Invalid=2548, Unknown=0, NotChecked=0, Total=2862 [2021-10-28 23:06:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-28 23:06:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 250. [2021-10-28 23:06:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 191 states have (on average 1.4240837696335078) internal successors, (272), 237 states have internal predecessors, (272), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:06:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 286 transitions. [2021-10-28 23:06:43,698 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 286 transitions. Word has length 52 [2021-10-28 23:06:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:06:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 286 transitions. [2021-10-28 23:06:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 22 states have internal predecessors, (92), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:06:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 286 transitions. [2021-10-28 23:06:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 23:06:43,699 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:06:43,700 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:06:43,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-28 23:06:43,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:06:43,928 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting inspectErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:06:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:06:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1572456405, now seen corresponding path program 1 times [2021-10-28 23:06:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:06:43,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075556414] [2021-10-28 23:06:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:43,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:06:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:06:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:06:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:44,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:06:44,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075556414] [2021-10-28 23:06:44,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075556414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:44,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722789533] [2021-10-28 23:06:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:06:44,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:06:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:06:44,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:06:44,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:06:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:06:45,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 23:06:45,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:06:45,074 INFO L388 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 [2021-10-28 23:06:45,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:06:45,241 INFO L388 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 11 [2021-10-28 23:06:45,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-28 23:06:45,423 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 23:06:45,424 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-28 23:06:45,618 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-10-28 23:06:45,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 34 [2021-10-28 23:06:51,788 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-10-28 23:06:51,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 53 [2021-10-28 23:06:51,921 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:06:51,922 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-10-28 23:06:52,462 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 23:06:52,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 28 [2021-10-28 23:06:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:06:52,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722789533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:06:52,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:06:52,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2021-10-28 23:06:52,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106410626] [2021-10-28 23:06:52,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-28 23:06:52,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:06:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-28 23:06:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1301, Unknown=2, NotChecked=0, Total=1406 [2021-10-28 23:06:52,468 INFO L87 Difference]: Start difference. First operand 250 states and 286 transitions. Second operand has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 32 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:07:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:16,514 INFO L93 Difference]: Finished difference Result 337 states and 383 transitions. [2021-10-28 23:07:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 23:07:16,515 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 32 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2021-10-28 23:07:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:16,516 INFO L225 Difference]: With dead ends: 337 [2021-10-28 23:07:16,516 INFO L226 Difference]: Without dead ends: 337 [2021-10-28 23:07:16,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=413, Invalid=3610, Unknown=9, NotChecked=0, Total=4032 [2021-10-28 23:07:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-28 23:07:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 284. [2021-10-28 23:07:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 222 states have (on average 1.427927927927928) internal successors, (317), 269 states have internal predecessors, (317), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-10-28 23:07:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 334 transitions. [2021-10-28 23:07:16,528 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 334 transitions. Word has length 53 [2021-10-28 23:07:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:16,528 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 334 transitions. [2021-10-28 23:07:16,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 32 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:07:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 334 transitions. [2021-10-28 23:07:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 23:07:16,529 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:16,530 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:16,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:16,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 23:07:16,744 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting inspectErr5REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:07:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1572456404, now seen corresponding path program 1 times [2021-10-28 23:07:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:16,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381570816] [2021-10-28 23:07:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:16,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:07:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:17,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:17,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381570816] [2021-10-28 23:07:17,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381570816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:07:17,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406738061] [2021-10-28 23:07:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:17,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:07:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:07:17,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:07:17,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:07:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:18,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-28 23:07:18,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:18,341 INFO L388 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 [2021-10-28 23:07:18,517 INFO L388 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 [2021-10-28 23:07:18,529 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:07:18,529 INFO L388 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 11 [2021-10-28 23:07:18,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-28 23:07:18,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:07:18,770 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 23:07:18,770 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2021-10-28 23:07:18,780 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-28 23:07:18,781 INFO L388 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 55 treesize of output 50 [2021-10-28 23:07:19,018 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-10-28 23:07:19,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 66 [2021-10-28 23:07:19,040 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-10-28 23:07:19,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 81 treesize of output 79 [2021-10-28 23:07:23,314 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-10-28 23:07:23,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 88 [2021-10-28 23:07:23,337 INFO L354 Elim1Store]: treesize reduction 98, result has 21.6 percent of original size [2021-10-28 23:07:23,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 88 treesize of output 69 [2021-10-28 23:07:23,503 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:07:23,503 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-28 23:07:23,515 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 23:07:23,516 INFO L388 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 59 treesize of output 54 [2021-10-28 23:07:24,453 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-28 23:07:24,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 56 [2021-10-28 23:07:24,466 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 23:07:24,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2021-10-28 23:07:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:24,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406738061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:07:24,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:07:24,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2021-10-28 23:07:24,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377261283] [2021-10-28 23:07:24,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-28 23:07:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-28 23:07:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1229, Unknown=2, NotChecked=0, Total=1332 [2021-10-28 23:07:24,474 INFO L87 Difference]: Start difference. First operand 284 states and 334 transitions. Second operand has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:07:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:07:28,649 INFO L93 Difference]: Finished difference Result 339 states and 383 transitions. [2021-10-28 23:07:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 23:07:28,650 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2021-10-28 23:07:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:07:28,652 INFO L225 Difference]: With dead ends: 339 [2021-10-28 23:07:28,652 INFO L226 Difference]: Without dead ends: 339 [2021-10-28 23:07:28,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=348, Invalid=3072, Unknown=2, NotChecked=0, Total=3422 [2021-10-28 23:07:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-28 23:07:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 284. [2021-10-28 23:07:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 222 states have (on average 1.4189189189189189) internal successors, (315), 269 states have internal predecessors, (315), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-10-28 23:07:28,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 332 transitions. [2021-10-28 23:07:28,662 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 332 transitions. Word has length 53 [2021-10-28 23:07:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:07:28,662 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 332 transitions. [2021-10-28 23:07:28,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:07:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 332 transitions. [2021-10-28 23:07:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 23:07:28,663 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:07:28,663 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:07:28,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:07:28,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:07:28,877 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:07:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:07:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 159681268, now seen corresponding path program 1 times [2021-10-28 23:07:28,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:07:28,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493464061] [2021-10-28 23:07:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:28,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:07:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:07:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-28 23:07:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:29,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:07:29,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493464061] [2021-10-28 23:07:29,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493464061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:07:29,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635414583] [2021-10-28 23:07:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:07:29,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:07:29,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:07:29,562 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:07:29,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:07:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:07:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-28 23:07:30,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:07:30,325 INFO L388 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 [2021-10-28 23:07:30,514 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:07:30,514 INFO L388 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 11 [2021-10-28 23:07:30,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-28 23:07:30,703 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-28 23:07:30,703 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-10-28 23:07:30,952 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-10-28 23:07:30,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 34 [2021-10-28 23:07:37,230 INFO L354 Elim1Store]: treesize reduction 94, result has 22.3 percent of original size [2021-10-28 23:07:37,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 104 [2021-10-28 23:07:37,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2021-10-28 23:07:37,251 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-28 23:07:37,252 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 74 [2021-10-28 23:07:37,480 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:07:37,480 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 76 [2021-10-28 23:07:37,494 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 23:07:37,495 INFO L388 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 98 treesize of output 89 [2021-10-28 23:07:37,508 INFO L354 Elim1Store]: treesize reduction 53, result has 24.3 percent of original size [2021-10-28 23:07:37,509 INFO L388 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 90 treesize of output 62 [2021-10-28 23:07:38,532 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 23:07:38,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 59 [2021-10-28 23:07:38,546 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 23:07:38,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 32 [2021-10-28 23:07:38,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:07:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:07:38,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635414583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:07:38,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:07:38,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2021-10-28 23:07:38,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495806983] [2021-10-28 23:07:38,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-28 23:07:38,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:07:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-28 23:07:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1530, Unknown=2, NotChecked=0, Total=1640 [2021-10-28 23:07:38,627 INFO L87 Difference]: Start difference. First operand 284 states and 332 transitions. Second operand has 41 states, 41 states have (on average 2.292682926829268) internal successors, (94), 35 states have internal predecessors, (94), 4 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:08:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:03,675 INFO L93 Difference]: Finished difference Result 338 states and 380 transitions. [2021-10-28 23:08:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 23:08:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.292682926829268) internal successors, (94), 35 states have internal predecessors, (94), 4 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2021-10-28 23:08:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:03,677 INFO L225 Difference]: With dead ends: 338 [2021-10-28 23:08:03,677 INFO L226 Difference]: Without dead ends: 338 [2021-10-28 23:08:03,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=412, Invalid=4001, Unknown=9, NotChecked=0, Total=4422 [2021-10-28 23:08:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-28 23:08:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 284. [2021-10-28 23:08:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 222 states have (on average 1.40990990990991) internal successors, (313), 269 states have internal predecessors, (313), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-10-28 23:08:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 330 transitions. [2021-10-28 23:08:03,686 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 330 transitions. Word has length 56 [2021-10-28 23:08:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:03,687 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 330 transitions. [2021-10-28 23:08:03,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.292682926829268) internal successors, (94), 35 states have internal predecessors, (94), 4 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 23:08:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 330 transitions. [2021-10-28 23:08:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 23:08:03,688 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:03,688 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:03,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:08:03,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:08:03,904 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, create_treeErr0REQUIRES_VIOLATION, create_treeErr1REQUIRES_VIOLATION (and 61 more)] === [2021-10-28 23:08:03,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1789567773, now seen corresponding path program 1 times [2021-10-28 23:08:03,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:03,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455966741] [2021-10-28 23:08:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:03,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:03,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:04,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:04,004 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:08:04,005 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:04,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:04,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr0REQUIRES_VIOLATION [2021-10-28 23:08:04,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr1REQUIRES_VIOLATION [2021-10-28 23:08:04,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr2REQUIRES_VIOLATION [2021-10-28 23:08:04,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr3REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr4REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr5REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr6REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr7REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr8REQUIRES_VIOLATION [2021-10-28 23:08:04,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr9REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr10REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr11REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr12REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr13REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr14REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr15REQUIRES_VIOLATION [2021-10-28 23:08:04,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr16REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr17REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr18REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr19REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr20REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr21REQUIRES_VIOLATION [2021-10-28 23:08:04,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr22REQUIRES_VIOLATION [2021-10-28 23:08:04,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr23REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr24REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr25REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr26REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr27REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr28REQUIRES_VIOLATION [2021-10-28 23:08:04,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_treeErr29REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr0REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr1REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr2REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr3REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr4REQUIRES_VIOLATION [2021-10-28 23:08:04,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr5REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr6REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr7REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr8REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr9REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr0REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr1REQUIRES_VIOLATION [2021-10-28 23:08:04,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr2REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr3REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr4REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr5REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr6REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr7REQUIRES_VIOLATION [2021-10-28 23:08:04,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr11REQUIRES_VIOLATION [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr12REQUIRES_VIOLATION [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr13REQUIRES_VIOLATION [2021-10-28 23:08:04,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr14REQUIRES_VIOLATION [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr15ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr16ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr17ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr18REQUIRES_VIOLATION [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr19REQUIRES_VIOLATION [2021-10-28 23:08:04,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_treeErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:04,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 23:08:04,053 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-28 23:08:04,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:04,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:04 BoogieIcfgContainer [2021-10-28 23:08:04,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:04,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:04,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:04,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:04,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:02" (3/4) ... [2021-10-28 23:08:04,126 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:08:04,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:08:04,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:04,194 INFO L168 Benchmark]: Toolchain (without parser) took 182749.78 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 54.8 MB in the beginning and 121.3 MB in the end (delta: -66.5 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,194 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 72.4 MB in the end (delta: 66.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:04,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.50 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.6 MB in the beginning and 95.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,196 INFO L168 Benchmark]: Boogie Preprocessor took 112.68 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 92.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,197 INFO L168 Benchmark]: RCFGBuilder took 915.77 ms. Allocated memory is still 127.9 MB. Free memory was 92.2 MB in the beginning and 63.5 MB in the end (delta: 28.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,197 INFO L168 Benchmark]: TraceAbstraction took 181151.28 ms. Allocated memory was 127.9 MB in the beginning and 195.0 MB in the end (delta: 67.1 MB). Free memory was 62.8 MB in the beginning and 124.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 95.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,197 INFO L168 Benchmark]: Witness Printer took 69.04 ms. Allocated memory is still 195.0 MB. Free memory was 124.5 MB in the beginning and 121.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:04,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 72.4 MB in the end (delta: 66.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 495.50 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.6 MB in the beginning and 95.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.68 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 92.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 915.77 ms. Allocated memory is still 127.9 MB. Free memory was 92.2 MB in the beginning and 63.5 MB in the end (delta: 28.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 181151.28 ms. Allocated memory was 127.9 MB in the beginning and 195.0 MB in the end (delta: 67.1 MB). Free memory was 62.8 MB in the beginning and 124.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 95.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.04 ms. Allocated memory is still 195.0 MB. Free memory was 124.5 MB in the beginning and 121.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 565]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L632] CALL, EXPR create_tree() [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); VAL [node={0:0}, nodelast={0:0}] [L587] COND TRUE __VERIFIER_nondet_int() [L588] node = malloc(sizeof *node) [L589] COND FALSE !(!node) VAL [node={-1:0}, nodelast={0:0}] [L591] node->left = ((void *)0) VAL [node={-1:0}, nodelast={0:0}] [L592] node->right = nodelast VAL [node={-1:0}, nodelast={0:0}] [L593] COND FALSE !(\read(*nodelast)) VAL [node={-1:0}, nodelast={0:0}] [L595] int value = __VERIFIER_nondet_int(); [L596] node->value = value VAL [node={-1:0}, nodelast={0:0}, value=0] [L597] nodelast = node VAL [node={-1:0}, nodelast={-1:0}, value=0] [L587] COND FALSE !(__VERIFIER_nondet_int()) [L599] COND TRUE node != ((void *)0) VAL [node={-1:0}, nodelast={-1:0}, value=0] [L600] node->parent = ((void *)0) VAL [node={-1:0}, nodelast={-1:0}, value=0] [L601] COND TRUE node != ((void *)0) [L602] node->left = malloc(sizeof *node) VAL [malloc(sizeof *node)={-2:0}, node={-1:0}, nodelast={-1:0}, value=0] [L603] COND FALSE !(!node) VAL [node={-1:0}, nodelast={-1:0}, value=0] [L605] EXPR node->left VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L605] node->left->left = ((void *)0) VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L606] EXPR node->left VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L606] node->left->right = ((void *)0) VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L607] EXPR node->left VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L607] node->left->value = 42 VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L608] EXPR node->left VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L608] node->left->parent = node VAL [node={-1:0}, node->left={-2:0}, nodelast={-1:0}, value=0] [L609] EXPR node->right VAL [node={-1:0}, node->right={0:0}, nodelast={-1:0}, value=0] [L609] node = node->right [L601] COND FALSE !(node != ((void *)0)) VAL [node={0:0}, nodelast={-1:0}, value=0] [L611] return nodelast; VAL [\result={-1:0}, node={0:0}, nodelast={-1:0}, value=0] [L632] RET, EXPR create_tree() VAL [create_tree()={-1:0}] [L632] struct node *data = create_tree(); [L633] COND FALSE !(!data) VAL [data={-1:0}] [L635] CALL inspect(data) VAL [node={-1:0}] [L575] COND FALSE !(!(node)) VAL [node={-1:0}, node={-1:0}] [L576] COND TRUE node != ((void *)0) VAL [node={-1:0}, node={-1:0}] [L577] node->left VAL [node={-1:0}, node={-1:0}, node->left={-2:0}] [L577] COND TRUE node->left [L578] EXPR node->left VAL [node={-1:0}, node={-1:0}, node->left={-2:0}] [L578] EXPR node->left->value VAL [node={-1:0}, node={-1:0}, node->left={-2:0}, node->left->value=42] [L578] COND FALSE !(!(node->left->value == 42)) [L579] EXPR node->value VAL [node={-1:0}, node={-1:0}, node->value=0] [L579] COND TRUE !(node->value) [L579] CALL fail() [L565] reach_error() - UnprovableResult [Line: 630]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 592]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 606]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 577]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 622]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 622]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 622]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 622]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 622]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 624]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 626]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 626]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 628]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 628]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 628]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 173 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 181.0s, OverallIterations: 29, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 119.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2484 SDtfs, 7028 SDslu, 5910 SDs, 0 SdLazy, 33248 SolverSat, 864 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 40.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1141 GetRequests, 500 SyntacticMatches, 3 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6004 ImplicationChecksByTransitivity, 111.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=26, InterpolantAutomatonStates: 408, 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, 28 MinimizatonAttempts, 1365 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 52.6s InterpolantComputationTime, 1501 NumberOfCodeBlocks, 1501 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1403 ConstructedInterpolants, 169 QuantifiedInterpolants, 24583 SizeOfPredicates, 151 NumberOfNonLiveVariables, 2844 ConjunctsInSsa, 407 ConjunctsInUnsatCore, 39 InterpolantComputations, 17 PerfectInterpolantSequences, 81/152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:08:04,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_387612ae-a245-4010-aeaa-260ca40a285f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...