./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c17307c3ae663be4a153b702602dea6d5ee45f14a080e7a1fb720e97140b770f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:28:20,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:28:20,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:28:20,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:28:20,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:28:20,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:28:20,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:28:20,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:28:20,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:28:20,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:28:20,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:28:20,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:28:20,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:28:20,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:28:20,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:28:20,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:28:20,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:28:20,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:28:20,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:28:20,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:28:20,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:28:20,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:28:20,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:28:20,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:28:20,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:28:20,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:28:20,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:28:20,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:28:20,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:28:20,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:28:20,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:28:20,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:28:20,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:28:20,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:28:20,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:28:20,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:28:20,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:28:20,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:28:20,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:28:20,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:28:20,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:28:20,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:28:20,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:28:20,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:28:20,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:28:20,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:28:20,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:28:20,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:28:20,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:28:20,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:28:20,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:28:20,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:28:20,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:28:20,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:28:20,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:28:20,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:28:20,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:28:20,529 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:28:20,529 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:28:20,529 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:28:20,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:28:20,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:28:20,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:28:20,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:28:20,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:28:20,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:28:20,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:28:20,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:28:20,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:28:20,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:28:20,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:28:20,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:28:20,532 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_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c17307c3ae663be4a153b702602dea6d5ee45f14a080e7a1fb720e97140b770f [2022-11-18 20:28:20,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:28:20,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:28:20,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:28:20,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:28:20,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:28:20,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2022-11-18 20:28:20,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/data/a8c3be77d/af989184662c4646a3de5d426cd32d1d/FLAGd9c0de600 [2022-11-18 20:28:21,393 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:28:21,394 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2022-11-18 20:28:21,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/data/a8c3be77d/af989184662c4646a3de5d426cd32d1d/FLAGd9c0de600 [2022-11-18 20:28:21,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/data/a8c3be77d/af989184662c4646a3de5d426cd32d1d [2022-11-18 20:28:21,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:28:21,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:28:21,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:28:21,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:28:21,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:28:21,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:28:21" (1/1) ... [2022-11-18 20:28:21,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4915f9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:21, skipping insertion in model container [2022-11-18 20:28:21,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:28:21" (1/1) ... [2022-11-18 20:28:21,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:28:21,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:28:22,011 WARN L234 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_c756ec53-0eb0-4c51-aa9b-df34555be391/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-11-18 20:28:22,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:28:22,026 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:28:22,051 WARN L234 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_c756ec53-0eb0-4c51-aa9b-df34555be391/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-11-18 20:28:22,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:28:22,069 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:28:22,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22 WrapperNode [2022-11-18 20:28:22,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:28:22,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:28:22,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:28:22,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:28:22,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,125 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-18 20:28:22,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:28:22,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:28:22,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:28:22,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:28:22,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:28:22,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:28:22,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:28:22,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:28:22,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (1/1) ... [2022-11-18 20:28:22,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:28:22,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:22,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:28:22,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:28:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:28:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:28:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:28:22,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:28:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:28:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:28:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:28:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:28:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:28:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:28:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:28:22,262 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:28:22,392 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:28:22,395 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:28:22,722 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:28:22,767 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:28:22,768 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:28:22,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:28:22 BoogieIcfgContainer [2022-11-18 20:28:22,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:28:22,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:28:22,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:28:22,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:28:22,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:28:21" (1/3) ... [2022-11-18 20:28:22,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a5c486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:28:22, skipping insertion in model container [2022-11-18 20:28:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:28:22" (2/3) ... [2022-11-18 20:28:22,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a5c486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:28:22, skipping insertion in model container [2022-11-18 20:28:22,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:28:22" (3/3) ... [2022-11-18 20:28:22,785 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-11-18 20:28:22,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:28:22,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 20:28:22,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:28:22,896 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:28:22,945 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:28:22,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions, 204 flow [2022-11-18 20:28:22,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 94 transitions, 204 flow [2022-11-18 20:28:22,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2022-11-18 20:28:23,026 INFO L130 PetriNetUnfolder]: 6/92 cut-off events. [2022-11-18 20:28:23,026 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:28:23,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-18 20:28:23,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2022-11-18 20:28:26,952 INFO L134 LiptonReduction]: Checked pairs total: 647 [2022-11-18 20:28:26,953 INFO L136 LiptonReduction]: Total number of compositions: 95 [2022-11-18 20:28:26,961 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2022-11-18 20:28:26,980 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:26,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:28:27,006 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23ae5f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:28:27,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 20:28:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 20:28:27,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,014 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 20:28:27,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash 380, now seen corresponding path program 1 times [2022-11-18 20:28:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228808217] [2022-11-18 20:28:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:27,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:27,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228808217] [2022-11-18 20:28:27,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228808217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:27,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:27,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 20:28:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330187883] [2022-11-18 20:28:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:28:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:28:27,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:28:27,173 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:27,245 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2022-11-18 20:28:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:28:27,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-18 20:28:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:27,262 INFO L225 Difference]: With dead ends: 64 [2022-11-18 20:28:27,262 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:28:27,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:28:27,271 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:27,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:27,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:28:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 20:28:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2022-11-18 20:28:27,333 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2022-11-18 20:28:27,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:27,334 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2022-11-18 20:28:27,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2022-11-18 20:28:27,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:28:27,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:28:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:28:27,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 375237, now seen corresponding path program 1 times [2022-11-18 20:28:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209494011] [2022-11-18 20:28:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209494011] [2022-11-18 20:28:27,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209494011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:27,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:27,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:28:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122168127] [2022-11-18 20:28:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:27,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,605 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:27,649 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2022-11-18 20:28:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:27,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:28:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:27,650 INFO L225 Difference]: With dead ends: 58 [2022-11-18 20:28:27,651 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 20:28:27,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,652 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:27,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 20:28:27,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-18 20:28:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2022-11-18 20:28:27,662 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2022-11-18 20:28:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:27,662 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2022-11-18 20:28:27,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2022-11-18 20:28:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:28:27,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:28:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:28:27,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 375239, now seen corresponding path program 1 times [2022-11-18 20:28:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141415965] [2022-11-18 20:28:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:27,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141415965] [2022-11-18 20:28:27,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141415965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:27,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:27,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:28:27,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115891570] [2022-11-18 20:28:27,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,729 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:27,754 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2022-11-18 20:28:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:27,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:28:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:27,756 INFO L225 Difference]: With dead ends: 52 [2022-11-18 20:28:27,756 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:28:27,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,757 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:27,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:28:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 20:28:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2022-11-18 20:28:27,763 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2022-11-18 20:28:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:27,764 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2022-11-18 20:28:27,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2022-11-18 20:28:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:28:27,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:28:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:28:27,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 360611902, now seen corresponding path program 1 times [2022-11-18 20:28:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129971282] [2022-11-18 20:28:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:27,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129971282] [2022-11-18 20:28:27,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129971282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:27,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:27,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:28:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065258641] [2022-11-18 20:28:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,931 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:27,963 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2022-11-18 20:28:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:28:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:27,966 INFO L225 Difference]: With dead ends: 43 [2022-11-18 20:28:27,966 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:28:27,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:27,969 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:27,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:28:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-18 20:28:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2022-11-18 20:28:27,983 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2022-11-18 20:28:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:27,984 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2022-11-18 20:28:27,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2022-11-18 20:28:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:28:27,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:28:27,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:28:27,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash 360611903, now seen corresponding path program 1 times [2022-11-18 20:28:27,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448397212] [2022-11-18 20:28:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448397212] [2022-11-18 20:28:28,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448397212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:28,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:28,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583344797] [2022-11-18 20:28:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:28,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:28,157 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:28,193 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2022-11-18 20:28:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:28:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:28,202 INFO L225 Difference]: With dead ends: 34 [2022-11-18 20:28:28,202 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 20:28:28,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:28,205 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 20:28:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-18 20:28:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2022-11-18 20:28:28,218 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2022-11-18 20:28:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:28,219 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2022-11-18 20:28:28,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2022-11-18 20:28:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:28:28,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:28,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:28:28,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1730339643, now seen corresponding path program 1 times [2022-11-18 20:28:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:28,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942620325] [2022-11-18 20:28:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:28,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:28,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942620325] [2022-11-18 20:28:28,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942620325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:28,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:28,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610227342] [2022-11-18 20:28:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:28,418 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:28,462 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2022-11-18 20:28:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:28,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:28:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:28,463 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:28:28,464 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 20:28:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:28,465 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:28,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 20:28:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-18 20:28:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2022-11-18 20:28:28,470 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2022-11-18 20:28:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:28,470 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2022-11-18 20:28:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2022-11-18 20:28:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:28:28,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:28,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:28:28,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1292896104, now seen corresponding path program 1 times [2022-11-18 20:28:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:28,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279876115] [2022-11-18 20:28:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:28,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279876115] [2022-11-18 20:28:28,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279876115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:28,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910565826] [2022-11-18 20:28:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:28,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:28,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:28:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:28,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:28,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910565826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:28,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:28,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-18 20:28:28,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405073897] [2022-11-18 20:28:28,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:28,764 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:28,910 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2022-11-18 20:28:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:28:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:28:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:28,912 INFO L225 Difference]: With dead ends: 52 [2022-11-18 20:28:28,912 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:28:28,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:28,913 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:28,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:28:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 20:28:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2022-11-18 20:28:28,917 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2022-11-18 20:28:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:28,917 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2022-11-18 20:28:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2022-11-18 20:28:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:28:28,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:28,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:28,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:28:29,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:28:29,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:29,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:29,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1519779192, now seen corresponding path program 1 times [2022-11-18 20:28:29,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:29,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597767685] [2022-11-18 20:28:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:29,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:29,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:29,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597767685] [2022-11-18 20:28:29,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597767685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:29,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926140864] [2022-11-18 20:28:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:29,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:29,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:29,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:28:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:28:29,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:29,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:29,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926140864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:29,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:29,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 4 [2022-11-18 20:28:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993106870] [2022-11-18 20:28:29,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:28:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:28:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:28:29,755 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:29,839 INFO L93 Difference]: Finished difference Result 95 states and 211 transitions. [2022-11-18 20:28:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 20:28:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:29,842 INFO L225 Difference]: With dead ends: 95 [2022-11-18 20:28:29,842 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 20:28:29,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:28:29,844 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:29,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 20:28:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2022-11-18 20:28:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 146 transitions. [2022-11-18 20:28:29,863 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 146 transitions. Word has length 15 [2022-11-18 20:28:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:29,863 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 146 transitions. [2022-11-18 20:28:29,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 146 transitions. [2022-11-18 20:28:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:28:29,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:29,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:29,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:30,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:28:30,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:30,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 983820998, now seen corresponding path program 2 times [2022-11-18 20:28:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:30,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962462845] [2022-11-18 20:28:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:30,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:30,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:30,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962462845] [2022-11-18 20:28:30,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962462845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:30,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482844815] [2022-11-18 20:28:30,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:30,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:30,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:30,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:28:30,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:30,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:30,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:30,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:30,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482844815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:30,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:30,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2022-11-18 20:28:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658998123] [2022-11-18 20:28:30,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:28:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:28:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:30,523 INFO L87 Difference]: Start difference. First operand 64 states and 146 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:30,684 INFO L93 Difference]: Finished difference Result 84 states and 189 transitions. [2022-11-18 20:28:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 20:28:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:30,688 INFO L225 Difference]: With dead ends: 84 [2022-11-18 20:28:30,688 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 20:28:30,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:28:30,691 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:30,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 20:28:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2022-11-18 20:28:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.305084745762712) internal successors, (136), 59 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2022-11-18 20:28:30,702 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2022-11-18 20:28:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:30,702 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2022-11-18 20:28:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2022-11-18 20:28:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:28:30,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:30,709 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:30,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:28:30,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:30,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -411881579, now seen corresponding path program 3 times [2022-11-18 20:28:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:30,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135532905] [2022-11-18 20:28:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:30,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135532905] [2022-11-18 20:28:31,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135532905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266782667] [2022-11-18 20:28:31,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:28:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:31,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:31,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:28:31,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:28:31,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:31,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:31,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:31,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:31,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266782667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:31,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:31,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-18 20:28:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580727935] [2022-11-18 20:28:31,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:28:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:28:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:31,485 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:32,040 INFO L93 Difference]: Finished difference Result 117 states and 267 transitions. [2022-11-18 20:28:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:28:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:28:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:32,042 INFO L225 Difference]: With dead ends: 117 [2022-11-18 20:28:32,042 INFO L226 Difference]: Without dead ends: 117 [2022-11-18 20:28:32,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:28:32,044 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 149 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 20 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:28:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-18 20:28:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 66. [2022-11-18 20:28:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.3076923076923075) internal successors, (150), 65 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 150 transitions. [2022-11-18 20:28:32,050 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 150 transitions. Word has length 16 [2022-11-18 20:28:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:32,050 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 150 transitions. [2022-11-18 20:28:32,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 150 transitions. [2022-11-18 20:28:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:28:32,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:32,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:32,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:32,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -947839773, now seen corresponding path program 4 times [2022-11-18 20:28:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:32,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719987703] [2022-11-18 20:28:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719987703] [2022-11-18 20:28:32,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719987703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778738769] [2022-11-18 20:28:32,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:28:32,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:32,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:32,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:28:32,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:28:32,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:32,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:28:32,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:32,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:32,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778738769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:32,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:32,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-18 20:28:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853085082] [2022-11-18 20:28:32,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:28:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:28:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:32,685 INFO L87 Difference]: Start difference. First operand 66 states and 150 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:33,206 INFO L93 Difference]: Finished difference Result 172 states and 381 transitions. [2022-11-18 20:28:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:28:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:28:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:33,208 INFO L225 Difference]: With dead ends: 172 [2022-11-18 20:28:33,208 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 20:28:33,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:28:33,209 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 121 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:33,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 18 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 20:28:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 84. [2022-11-18 20:28:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.5180722891566263) internal successors, (209), 83 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 209 transitions. [2022-11-18 20:28:33,217 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 209 transitions. Word has length 16 [2022-11-18 20:28:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:33,218 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 209 transitions. [2022-11-18 20:28:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 209 transitions. [2022-11-18 20:28:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:28:33,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:33,219 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:33,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:33,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:28:33,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1672192975, now seen corresponding path program 5 times [2022-11-18 20:28:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:33,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443752509] [2022-11-18 20:28:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:33,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443752509] [2022-11-18 20:28:33,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443752509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:33,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796290033] [2022-11-18 20:28:33,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:28:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:33,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:33,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:28:33,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:28:33,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:33,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:28:33,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:33,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:33,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796290033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:33,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:33,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:28:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961667064] [2022-11-18 20:28:33,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:28:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:28:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:33,836 INFO L87 Difference]: Start difference. First operand 84 states and 209 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:34,435 INFO L93 Difference]: Finished difference Result 184 states and 406 transitions. [2022-11-18 20:28:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:28:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:28:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:34,437 INFO L225 Difference]: With dead ends: 184 [2022-11-18 20:28:34,437 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 20:28:34,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:28:34,439 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 148 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:34,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 16 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 20:28:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 82. [2022-11-18 20:28:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.419753086419753) internal successors, (196), 81 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 196 transitions. [2022-11-18 20:28:34,444 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 196 transitions. Word has length 16 [2022-11-18 20:28:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:34,444 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 196 transitions. [2022-11-18 20:28:34,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 196 transitions. [2022-11-18 20:28:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:28:34,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:34,445 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:34,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:28:34,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash -467761373, now seen corresponding path program 6 times [2022-11-18 20:28:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:34,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998853646] [2022-11-18 20:28:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:34,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998853646] [2022-11-18 20:28:34,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998853646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:34,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628412675] [2022-11-18 20:28:34,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:28:34,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:34,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:34,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:28:34,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:28:34,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:34,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:28:34,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:35,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628412675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:35,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:35,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-11-18 20:28:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017104157] [2022-11-18 20:28:35,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:28:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:28:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:35,170 INFO L87 Difference]: Start difference. First operand 82 states and 196 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:35,704 INFO L93 Difference]: Finished difference Result 166 states and 370 transitions. [2022-11-18 20:28:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:28:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:28:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:35,706 INFO L225 Difference]: With dead ends: 166 [2022-11-18 20:28:35,706 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:28:35,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:28:35,707 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 104 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 9 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:28:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 90. [2022-11-18 20:28:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.561797752808989) internal successors, (228), 89 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 228 transitions. [2022-11-18 20:28:35,713 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 228 transitions. Word has length 16 [2022-11-18 20:28:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:35,713 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 228 transitions. [2022-11-18 20:28:35,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2022-11-18 20:28:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:28:35,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:35,714 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:35,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:28:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:28:35,919 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash -468950665, now seen corresponding path program 7 times [2022-11-18 20:28:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:35,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517575797] [2022-11-18 20:28:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517575797] [2022-11-18 20:28:36,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517575797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121826148] [2022-11-18 20:28:36,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:28:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:36,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:36,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:28:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:36,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:28:36,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:36,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:36,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121826148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:36,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:36,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-11-18 20:28:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028209384] [2022-11-18 20:28:36,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:28:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:28:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:36,398 INFO L87 Difference]: Start difference. First operand 90 states and 228 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:36,875 INFO L93 Difference]: Finished difference Result 152 states and 344 transitions. [2022-11-18 20:28:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:28:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:28:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:36,876 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:28:36,876 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 20:28:36,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:28:36,877 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 86 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:36,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 13 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 20:28:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 76. [2022-11-18 20:28:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3866666666666667) internal successors, (179), 75 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 179 transitions. [2022-11-18 20:28:36,884 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 179 transitions. Word has length 16 [2022-11-18 20:28:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:36,886 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 179 transitions. [2022-11-18 20:28:36,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 179 transitions. [2022-11-18 20:28:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:28:36,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:36,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:36,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:37,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:28:37,094 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1233541605, now seen corresponding path program 8 times [2022-11-18 20:28:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:37,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871065812] [2022-11-18 20:28:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:37,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871065812] [2022-11-18 20:28:37,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871065812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889972203] [2022-11-18 20:28:37,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:37,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:37,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:37,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:28:37,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:37,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:37,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:28:37,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:37,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:37,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889972203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:37,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:37,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 7 [2022-11-18 20:28:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48918396] [2022-11-18 20:28:37,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:37,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:28:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:28:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:37,702 INFO L87 Difference]: Start difference. First operand 76 states and 179 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:37,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:37,849 INFO L93 Difference]: Finished difference Result 149 states and 344 transitions. [2022-11-18 20:28:37,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:37,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:28:37,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:37,851 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:28:37,851 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 20:28:37,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:37,852 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:37,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 15 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 20:28:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2022-11-18 20:28:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.484536082474227) internal successors, (241), 97 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2022-11-18 20:28:37,858 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 17 [2022-11-18 20:28:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:37,858 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2022-11-18 20:28:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2022-11-18 20:28:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:28:37,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:37,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:37,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:38,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:28:38,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1709258533, now seen corresponding path program 9 times [2022-11-18 20:28:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:38,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631485357] [2022-11-18 20:28:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631485357] [2022-11-18 20:28:38,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631485357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209785838] [2022-11-18 20:28:38,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:28:38,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:38,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:38,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:38,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:28:38,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:28:38,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:28:38,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:38,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:38,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209785838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:38,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:38,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-18 20:28:38,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725534794] [2022-11-18 20:28:38,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:38,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:28:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:28:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:38,756 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:39,861 INFO L93 Difference]: Finished difference Result 306 states and 700 transitions. [2022-11-18 20:28:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:28:39,862 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:28:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:39,863 INFO L225 Difference]: With dead ends: 306 [2022-11-18 20:28:39,863 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 20:28:39,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:28:39,865 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 155 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:39,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 16 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:39,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 20:28:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 138. [2022-11-18 20:28:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.781021897810219) internal successors, (381), 137 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 381 transitions. [2022-11-18 20:28:39,884 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 381 transitions. Word has length 17 [2022-11-18 20:28:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:39,885 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 381 transitions. [2022-11-18 20:28:39,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 381 transitions. [2022-11-18 20:28:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:28:39,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:39,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:39,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:28:40,092 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:40,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash 910774215, now seen corresponding path program 10 times [2022-11-18 20:28:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:40,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84449390] [2022-11-18 20:28:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84449390] [2022-11-18 20:28:40,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84449390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797682130] [2022-11-18 20:28:40,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:28:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:40,267 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:40,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:28:40,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:28:40,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:40,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:40,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:40,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:40,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:40,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797682130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:40,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:40,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-18 20:28:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756882115] [2022-11-18 20:28:40,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:28:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:28:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:28:40,903 INFO L87 Difference]: Start difference. First operand 138 states and 381 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:41,964 INFO L93 Difference]: Finished difference Result 314 states and 735 transitions. [2022-11-18 20:28:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:28:41,964 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:28:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:41,966 INFO L225 Difference]: With dead ends: 314 [2022-11-18 20:28:41,967 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 20:28:41,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:28:41,968 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 114 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:41,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 15 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 20:28:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 138. [2022-11-18 20:28:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.708029197080292) internal successors, (371), 137 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 371 transitions. [2022-11-18 20:28:41,977 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 371 transitions. Word has length 17 [2022-11-18 20:28:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:41,977 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 371 transitions. [2022-11-18 20:28:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 371 transitions. [2022-11-18 20:28:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:28:41,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:41,979 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:41,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:42,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:28:42,185 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2133670664, now seen corresponding path program 11 times [2022-11-18 20:28:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:42,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974469892] [2022-11-18 20:28:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:42,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974469892] [2022-11-18 20:28:42,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974469892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:42,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671352436] [2022-11-18 20:28:42,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:28:42,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:42,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:42,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:42,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:28:42,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:28:42,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:42,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:42,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:42,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:42,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671352436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:42,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:42,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-18 20:28:42,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167120613] [2022-11-18 20:28:42,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:42,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:28:42,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:28:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:28:42,918 INFO L87 Difference]: Start difference. First operand 138 states and 371 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:43,708 INFO L93 Difference]: Finished difference Result 265 states and 665 transitions. [2022-11-18 20:28:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:28:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:28:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:43,710 INFO L225 Difference]: With dead ends: 265 [2022-11-18 20:28:43,710 INFO L226 Difference]: Without dead ends: 265 [2022-11-18 20:28:43,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:28:43,712 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 160 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:43,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 30 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:28:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-18 20:28:43,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 148. [2022-11-18 20:28:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.7142857142857144) internal successors, (399), 147 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 399 transitions. [2022-11-18 20:28:43,720 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 399 transitions. Word has length 18 [2022-11-18 20:28:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:43,721 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 399 transitions. [2022-11-18 20:28:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 399 transitions. [2022-11-18 20:28:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:28:43,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:43,722 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:43,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:28:43,923 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1982925176, now seen corresponding path program 12 times [2022-11-18 20:28:43,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:43,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508060374] [2022-11-18 20:28:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:44,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:44,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508060374] [2022-11-18 20:28:44,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508060374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:44,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559630004] [2022-11-18 20:28:44,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:28:44,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:44,153 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:44,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:28:44,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:28:44,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:44,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:28:44,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:44,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:44,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559630004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:44,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:44,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-18 20:28:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104528052] [2022-11-18 20:28:44,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:28:44,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:28:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:28:44,652 INFO L87 Difference]: Start difference. First operand 148 states and 399 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:45,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:45,707 INFO L93 Difference]: Finished difference Result 371 states and 900 transitions. [2022-11-18 20:28:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:28:45,707 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:28:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:45,712 INFO L225 Difference]: With dead ends: 371 [2022-11-18 20:28:45,712 INFO L226 Difference]: Without dead ends: 351 [2022-11-18 20:28:45,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:28:45,713 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 178 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:45,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 24 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-18 20:28:45,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 170. [2022-11-18 20:28:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.769230769230769) internal successors, (468), 169 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 468 transitions. [2022-11-18 20:28:45,724 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 468 transitions. Word has length 18 [2022-11-18 20:28:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:45,725 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 468 transitions. [2022-11-18 20:28:45,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 468 transitions. [2022-11-18 20:28:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:28:45,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:45,726 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:45,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:45,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:45,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash 205827334, now seen corresponding path program 13 times [2022-11-18 20:28:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:45,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444950525] [2022-11-18 20:28:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:46,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444950525] [2022-11-18 20:28:46,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444950525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:46,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072007611] [2022-11-18 20:28:46,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:28:46,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:46,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:46,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:28:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:46,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:46,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:46,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:46,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072007611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:46,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:46,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-18 20:28:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698365463] [2022-11-18 20:28:46,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:46,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:28:46,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:28:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:28:46,630 INFO L87 Difference]: Start difference. First operand 170 states and 468 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:47,758 INFO L93 Difference]: Finished difference Result 465 states and 1136 transitions. [2022-11-18 20:28:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:28:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:28:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:47,761 INFO L225 Difference]: With dead ends: 465 [2022-11-18 20:28:47,762 INFO L226 Difference]: Without dead ends: 441 [2022-11-18 20:28:47,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=596, Invalid=1566, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:28:47,763 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 206 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:47,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 17 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-18 20:28:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 210. [2022-11-18 20:28:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.861244019138756) internal successors, (598), 209 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 598 transitions. [2022-11-18 20:28:47,777 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 598 transitions. Word has length 18 [2022-11-18 20:28:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:47,777 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 598 transitions. [2022-11-18 20:28:47,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 598 transitions. [2022-11-18 20:28:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:28:47,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:47,779 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:47,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:47,984 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash -143875922, now seen corresponding path program 14 times [2022-11-18 20:28:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:47,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081531846] [2022-11-18 20:28:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:47,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081531846] [2022-11-18 20:28:48,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081531846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612412972] [2022-11-18 20:28:48,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:48,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:48,294 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:28:48,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:48,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:48,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:48,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:48,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612412972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:48,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:48,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2022-11-18 20:28:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886018543] [2022-11-18 20:28:48,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:28:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:28:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:28:48,779 INFO L87 Difference]: Start difference. First operand 210 states and 598 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:49,468 INFO L93 Difference]: Finished difference Result 422 states and 1042 transitions. [2022-11-18 20:28:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:28:49,468 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:28:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:49,471 INFO L225 Difference]: With dead ends: 422 [2022-11-18 20:28:49,471 INFO L226 Difference]: Without dead ends: 390 [2022-11-18 20:28:49,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:28:49,472 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 172 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:49,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 12 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:49,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-18 20:28:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 238. [2022-11-18 20:28:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.911392405063291) internal successors, (690), 237 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 690 transitions. [2022-11-18 20:28:49,483 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 690 transitions. Word has length 18 [2022-11-18 20:28:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:49,484 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 690 transitions. [2022-11-18 20:28:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 690 transitions. [2022-11-18 20:28:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:28:49,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:49,485 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:49,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:49,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:49,692 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash 773548762, now seen corresponding path program 15 times [2022-11-18 20:28:49,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:49,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384042078] [2022-11-18 20:28:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:49,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384042078] [2022-11-18 20:28:49,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384042078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:49,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431307967] [2022-11-18 20:28:49,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:28:49,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:49,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:49,919 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:49,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:28:50,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:28:50,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:50,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:28:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:50,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:50,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431307967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:50,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:50,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2022-11-18 20:28:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127308936] [2022-11-18 20:28:50,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:28:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:28:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:28:50,387 INFO L87 Difference]: Start difference. First operand 238 states and 690 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:51,295 INFO L93 Difference]: Finished difference Result 429 states and 1124 transitions. [2022-11-18 20:28:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:28:51,296 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:28:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:51,299 INFO L225 Difference]: With dead ends: 429 [2022-11-18 20:28:51,299 INFO L226 Difference]: Without dead ends: 425 [2022-11-18 20:28:51,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:28:51,300 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 135 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:51,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 9 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:28:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-18 20:28:51,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 250. [2022-11-18 20:28:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.963855421686747) internal successors, (738), 249 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 738 transitions. [2022-11-18 20:28:51,313 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 738 transitions. Word has length 18 [2022-11-18 20:28:51,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:51,314 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 738 transitions. [2022-11-18 20:28:51,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:51,314 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 738 transitions. [2022-11-18 20:28:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:28:51,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:51,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:51,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:51,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:51,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1225571608, now seen corresponding path program 16 times [2022-11-18 20:28:51,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172493064] [2022-11-18 20:28:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:51,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:51,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172493064] [2022-11-18 20:28:51,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172493064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:51,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271335524] [2022-11-18 20:28:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:28:51,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:51,791 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:28:51,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:28:51,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:51,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:28:51,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:51,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:52,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271335524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:52,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:52,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 10 [2022-11-18 20:28:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600101144] [2022-11-18 20:28:52,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:28:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:28:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:52,136 INFO L87 Difference]: Start difference. First operand 250 states and 738 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:52,349 INFO L93 Difference]: Finished difference Result 429 states and 1236 transitions. [2022-11-18 20:28:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:52,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:28:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:52,352 INFO L225 Difference]: With dead ends: 429 [2022-11-18 20:28:52,352 INFO L226 Difference]: Without dead ends: 402 [2022-11-18 20:28:52,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:52,353 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 76 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:52,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 26 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:28:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-18 20:28:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 346. [2022-11-18 20:28:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.026086956521739) internal successors, (1044), 345 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1044 transitions. [2022-11-18 20:28:52,366 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1044 transitions. Word has length 19 [2022-11-18 20:28:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:52,366 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 1044 transitions. [2022-11-18 20:28:52,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1044 transitions. [2022-11-18 20:28:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:28:52,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:52,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:52,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:52,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:28:52,584 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1677633370, now seen corresponding path program 17 times [2022-11-18 20:28:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:52,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915703543] [2022-11-18 20:28:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:52,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915703543] [2022-11-18 20:28:52,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915703543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985783920] [2022-11-18 20:28:52,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:28:52,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:52,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:52,863 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:52,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:28:52,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:28:52,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:53,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:53,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985783920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:53,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:53,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 18 [2022-11-18 20:28:53,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559307559] [2022-11-18 20:28:53,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:28:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:28:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:53,178 INFO L87 Difference]: Start difference. First operand 346 states and 1044 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:54,711 INFO L93 Difference]: Finished difference Result 664 states and 1741 transitions. [2022-11-18 20:28:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:28:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:28:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:54,723 INFO L225 Difference]: With dead ends: 664 [2022-11-18 20:28:54,723 INFO L226 Difference]: Without dead ends: 650 [2022-11-18 20:28:54,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=474, Invalid=2948, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 20:28:54,728 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 165 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:54,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 36 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:28:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-18 20:28:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 364. [2022-11-18 20:28:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 3.0165289256198347) internal successors, (1095), 363 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1095 transitions. [2022-11-18 20:28:54,745 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1095 transitions. Word has length 19 [2022-11-18 20:28:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 1095 transitions. [2022-11-18 20:28:54,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1095 transitions. [2022-11-18 20:28:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:28:54,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:54,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:54,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:54,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:54,959 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -380442354, now seen corresponding path program 18 times [2022-11-18 20:28:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793150726] [2022-11-18 20:28:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:55,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793150726] [2022-11-18 20:28:55,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793150726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:55,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893689358] [2022-11-18 20:28:55,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:28:55,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:55,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:55,142 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:55,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:28:55,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:28:55,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:55,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:28:55,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:55,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:28:55,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893689358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:55,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:55,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2022-11-18 20:28:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587128618] [2022-11-18 20:28:55,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:55,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:28:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:28:55,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:28:55,708 INFO L87 Difference]: Start difference. First operand 364 states and 1095 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:56,347 INFO L93 Difference]: Finished difference Result 766 states and 1987 transitions. [2022-11-18 20:28:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:28:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:28:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:56,352 INFO L225 Difference]: With dead ends: 766 [2022-11-18 20:28:56,352 INFO L226 Difference]: Without dead ends: 742 [2022-11-18 20:28:56,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:28:56,353 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:56,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 11 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:28:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-18 20:28:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 342. [2022-11-18 20:28:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.932551319648094) internal successors, (1000), 341 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1000 transitions. [2022-11-18 20:28:56,374 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1000 transitions. Word has length 19 [2022-11-18 20:28:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:56,374 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 1000 transitions. [2022-11-18 20:28:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1000 transitions. [2022-11-18 20:28:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:28:56,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:56,376 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:56,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:56,583 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash -510027595, now seen corresponding path program 19 times [2022-11-18 20:28:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826834097] [2022-11-18 20:28:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:56,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:56,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826834097] [2022-11-18 20:28:56,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826834097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:56,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161201422] [2022-11-18 20:28:56,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:28:56,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:56,876 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:56,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:28:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:28:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:57,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:57,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161201422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:57,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:28:57,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-11-18 20:28:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449105103] [2022-11-18 20:28:57,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:28:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:28:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:28:57,642 INFO L87 Difference]: Start difference. First operand 342 states and 1000 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:58,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:58,825 INFO L93 Difference]: Finished difference Result 629 states and 1688 transitions. [2022-11-18 20:28:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:28:58,826 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:28:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:58,830 INFO L225 Difference]: With dead ends: 629 [2022-11-18 20:28:58,831 INFO L226 Difference]: Without dead ends: 629 [2022-11-18 20:28:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=750, Invalid=2220, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:28:58,832 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 299 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:58,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 41 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-18 20:28:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 362. [2022-11-18 20:28:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.9445983379501386) internal successors, (1063), 361 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1063 transitions. [2022-11-18 20:28:58,851 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1063 transitions. Word has length 20 [2022-11-18 20:28:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:58,851 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1063 transitions. [2022-11-18 20:28:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1063 transitions. [2022-11-18 20:28:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:28:58,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:58,853 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:58,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:28:59,060 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:28:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 881734723, now seen corresponding path program 20 times [2022-11-18 20:28:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:59,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551426271] [2022-11-18 20:28:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:59,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551426271] [2022-11-18 20:28:59,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551426271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:59,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886659541] [2022-11-18 20:28:59,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:59,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:59,328 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:59,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:28:59,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:59,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:59,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:28:59,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:59,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:00,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886659541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:00,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:00,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-11-18 20:29:00,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948713961] [2022-11-18 20:29:00,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:00,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:29:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:29:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:29:00,062 INFO L87 Difference]: Start difference. First operand 362 states and 1063 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:03,104 INFO L93 Difference]: Finished difference Result 972 states and 2561 transitions. [2022-11-18 20:29:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:29:03,105 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:03,110 INFO L225 Difference]: With dead ends: 972 [2022-11-18 20:29:03,110 INFO L226 Difference]: Without dead ends: 968 [2022-11-18 20:29:03,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1783, Invalid=4379, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 20:29:03,112 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 413 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:03,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 24 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:29:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-18 20:29:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 508. [2022-11-18 20:29:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 3.084812623274162) internal successors, (1564), 507 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1564 transitions. [2022-11-18 20:29:03,137 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1564 transitions. Word has length 20 [2022-11-18 20:29:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:03,137 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 1564 transitions. [2022-11-18 20:29:03,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1564 transitions. [2022-11-18 20:29:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:29:03,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:03,140 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:03,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:03,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:29:03,346 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash -793199825, now seen corresponding path program 21 times [2022-11-18 20:29:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:03,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113628340] [2022-11-18 20:29:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113628340] [2022-11-18 20:29:03,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113628340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947902481] [2022-11-18 20:29:03,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:29:03,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:03,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:03,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:29:03,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:29:03,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:03,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:29:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:03,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:04,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947902481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:04,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:04,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-18 20:29:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868630734] [2022-11-18 20:29:04,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:04,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:29:04,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:29:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:29:04,176 INFO L87 Difference]: Start difference. First operand 508 states and 1564 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:08,382 INFO L93 Difference]: Finished difference Result 1387 states and 3588 transitions. [2022-11-18 20:29:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-18 20:29:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:08,387 INFO L225 Difference]: With dead ends: 1387 [2022-11-18 20:29:08,387 INFO L226 Difference]: Without dead ends: 1371 [2022-11-18 20:29:08,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5819 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3619, Invalid=12131, Unknown=0, NotChecked=0, Total=15750 [2022-11-18 20:29:08,392 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 592 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:08,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 33 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:29:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2022-11-18 20:29:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 590. [2022-11-18 20:29:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.0916808149405774) internal successors, (1821), 589 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1821 transitions. [2022-11-18 20:29:08,419 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1821 transitions. Word has length 20 [2022-11-18 20:29:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:08,419 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 1821 transitions. [2022-11-18 20:29:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1821 transitions. [2022-11-18 20:29:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:29:08,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:08,422 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:08,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-18 20:29:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:29:08,628 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1360206879, now seen corresponding path program 22 times [2022-11-18 20:29:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:08,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727910671] [2022-11-18 20:29:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:08,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727910671] [2022-11-18 20:29:08,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727910671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:08,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133128914] [2022-11-18 20:29:08,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:29:08,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:08,920 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:29:09,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:29:09,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:09,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:29:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:09,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:09,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133128914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:09,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:09,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 25 [2022-11-18 20:29:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014725439] [2022-11-18 20:29:09,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:09,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:29:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:29:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:29:09,476 INFO L87 Difference]: Start difference. First operand 590 states and 1821 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:10,841 INFO L93 Difference]: Finished difference Result 1158 states and 3211 transitions. [2022-11-18 20:29:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:29:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:10,849 INFO L225 Difference]: With dead ends: 1158 [2022-11-18 20:29:10,849 INFO L226 Difference]: Without dead ends: 1118 [2022-11-18 20:29:10,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=2393, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 20:29:10,851 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 314 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:10,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 19 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:29:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-11-18 20:29:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 578. [2022-11-18 20:29:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 3.0831889081455808) internal successors, (1779), 577 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1779 transitions. [2022-11-18 20:29:10,878 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1779 transitions. Word has length 20 [2022-11-18 20:29:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:10,878 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 1779 transitions. [2022-11-18 20:29:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1779 transitions. [2022-11-18 20:29:10,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:29:10,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:10,881 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:10,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 20:29:11,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:29:11,087 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash -222280579, now seen corresponding path program 23 times [2022-11-18 20:29:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:11,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435382740] [2022-11-18 20:29:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:11,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435382740] [2022-11-18 20:29:11,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435382740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877293222] [2022-11-18 20:29:11,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:29:11,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:11,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:11,347 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:11,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:29:11,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:29:11,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:11,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:29:11,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:11,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:11,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877293222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:11,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:11,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 27 [2022-11-18 20:29:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698702740] [2022-11-18 20:29:11,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:29:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:29:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:29:11,952 INFO L87 Difference]: Start difference. First operand 578 states and 1779 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:13,781 INFO L93 Difference]: Finished difference Result 1257 states and 3429 transitions. [2022-11-18 20:29:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:29:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:13,787 INFO L225 Difference]: With dead ends: 1257 [2022-11-18 20:29:13,787 INFO L226 Difference]: Without dead ends: 1205 [2022-11-18 20:29:13,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2022-11-18 20:29:13,790 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 317 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:13,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 17 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:29:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-11-18 20:29:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 620. [2022-11-18 20:29:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.0597738287560583) internal successors, (1894), 619 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1894 transitions. [2022-11-18 20:29:13,820 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1894 transitions. Word has length 20 [2022-11-18 20:29:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:13,821 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1894 transitions. [2022-11-18 20:29:13,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1894 transitions. [2022-11-18 20:29:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:29:13,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:13,823 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:13,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:14,029 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1345153484, now seen corresponding path program 24 times [2022-11-18 20:29:14,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899326463] [2022-11-18 20:29:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:14,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899326463] [2022-11-18 20:29:14,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899326463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601828701] [2022-11-18 20:29:14,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:29:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:14,253 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:14,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:29:14,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:29:14,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:29:14,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:14,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:14,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601828701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:14,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:14,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-11-18 20:29:14,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454411799] [2022-11-18 20:29:14,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:14,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:29:14,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:29:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:29:14,988 INFO L87 Difference]: Start difference. First operand 620 states and 1894 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:16,022 INFO L93 Difference]: Finished difference Result 966 states and 2726 transitions. [2022-11-18 20:29:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:29:16,022 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:16,028 INFO L225 Difference]: With dead ends: 966 [2022-11-18 20:29:16,028 INFO L226 Difference]: Without dead ends: 958 [2022-11-18 20:29:16,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:29:16,030 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 156 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 12 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:29:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-18 20:29:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 580. [2022-11-18 20:29:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 3.0328151986183074) internal successors, (1756), 579 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1756 transitions. [2022-11-18 20:29:16,051 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1756 transitions. Word has length 20 [2022-11-18 20:29:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:16,052 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 1756 transitions. [2022-11-18 20:29:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1756 transitions. [2022-11-18 20:29:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:29:16,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:16,055 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:16,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:16,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:16,261 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:16,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1279660507, now seen corresponding path program 25 times [2022-11-18 20:29:16,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:16,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610951806] [2022-11-18 20:29:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:16,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:16,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610951806] [2022-11-18 20:29:16,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610951806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149725347] [2022-11-18 20:29:16,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:29:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:16,481 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:16,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:29:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:16,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:29:16,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:16,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:29:17,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149725347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:17,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:17,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 27 [2022-11-18 20:29:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723908178] [2022-11-18 20:29:17,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:29:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:29:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:29:17,092 INFO L87 Difference]: Start difference. First operand 580 states and 1756 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:18,278 INFO L93 Difference]: Finished difference Result 920 states and 2520 transitions. [2022-11-18 20:29:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:29:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:29:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:18,284 INFO L225 Difference]: With dead ends: 920 [2022-11-18 20:29:18,284 INFO L226 Difference]: Without dead ends: 868 [2022-11-18 20:29:18,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=751, Invalid=2441, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 20:29:18,285 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 300 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:18,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 12 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:29:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-18 20:29:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 592. [2022-11-18 20:29:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 3.011844331641286) internal successors, (1780), 591 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1780 transitions. [2022-11-18 20:29:18,308 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1780 transitions. Word has length 20 [2022-11-18 20:29:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:18,308 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1780 transitions. [2022-11-18 20:29:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1780 transitions. [2022-11-18 20:29:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:18,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:18,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:18,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:18,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-18 20:29:18,511 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash 18899195, now seen corresponding path program 26 times [2022-11-18 20:29:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:18,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078521512] [2022-11-18 20:29:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:18,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:18,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078521512] [2022-11-18 20:29:18,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078521512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254793249] [2022-11-18 20:29:18,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:29:18,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:18,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:18,745 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:18,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:29:18,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:29:18,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:18,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:29:18,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:18,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:19,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254793249] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:19,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:19,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 13 [2022-11-18 20:29:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042401771] [2022-11-18 20:29:19,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:19,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:29:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:29:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:29:19,312 INFO L87 Difference]: Start difference. First operand 592 states and 1780 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:19,585 INFO L93 Difference]: Finished difference Result 865 states and 2574 transitions. [2022-11-18 20:29:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:29:19,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:19,588 INFO L225 Difference]: With dead ends: 865 [2022-11-18 20:29:19,589 INFO L226 Difference]: Without dead ends: 834 [2022-11-18 20:29:19,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:29:19,590 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 113 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:19,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 37 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:29:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-18 20:29:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 760. [2022-11-18 20:29:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 3.0711462450592886) internal successors, (2331), 759 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 2331 transitions. [2022-11-18 20:29:19,613 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 2331 transitions. Word has length 21 [2022-11-18 20:29:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:19,614 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 2331 transitions. [2022-11-18 20:29:19,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 2331 transitions. [2022-11-18 20:29:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:19,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:19,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:19,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 20:29:19,823 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash -827024005, now seen corresponding path program 27 times [2022-11-18 20:29:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:19,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171239403] [2022-11-18 20:29:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:19,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:20,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171239403] [2022-11-18 20:29:20,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171239403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:20,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780655580] [2022-11-18 20:29:20,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:29:20,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:20,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:20,167 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:20,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:29:20,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:29:20,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:20,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:29:20,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:20,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780655580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:20,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:20,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 20 [2022-11-18 20:29:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592527810] [2022-11-18 20:29:20,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:29:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:29:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:29:20,549 INFO L87 Difference]: Start difference. First operand 760 states and 2331 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:22,206 INFO L93 Difference]: Finished difference Result 1334 states and 3695 transitions. [2022-11-18 20:29:22,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:29:22,206 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:22,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:22,211 INFO L225 Difference]: With dead ends: 1334 [2022-11-18 20:29:22,211 INFO L226 Difference]: Without dead ends: 1328 [2022-11-18 20:29:22,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=3377, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 20:29:22,212 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 196 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:22,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 56 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:29:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-11-18 20:29:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 776. [2022-11-18 20:29:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 3.072258064516129) internal successors, (2381), 775 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2381 transitions. [2022-11-18 20:29:22,243 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2381 transitions. Word has length 21 [2022-11-18 20:29:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:22,244 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 2381 transitions. [2022-11-18 20:29:22,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2381 transitions. [2022-11-18 20:29:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:22,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:22,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:22,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-18 20:29:22,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:29:22,459 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1506331531, now seen corresponding path program 28 times [2022-11-18 20:29:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:22,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801131818] [2022-11-18 20:29:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801131818] [2022-11-18 20:29:22,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801131818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059294900] [2022-11-18 20:29:22,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:29:22,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:22,748 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:22,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:29:22,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:29:22,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:22,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:29:22,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:23,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:23,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059294900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:23,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:23,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-11-18 20:29:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578076155] [2022-11-18 20:29:23,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:23,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:29:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:29:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:29:23,540 INFO L87 Difference]: Start difference. First operand 776 states and 2381 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:24,916 INFO L93 Difference]: Finished difference Result 1654 states and 4633 transitions. [2022-11-18 20:29:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:29:24,917 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:24,925 INFO L225 Difference]: With dead ends: 1654 [2022-11-18 20:29:24,925 INFO L226 Difference]: Without dead ends: 1622 [2022-11-18 20:29:24,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=631, Invalid=2791, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 20:29:24,926 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 164 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 16 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-11-18 20:29:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 750. [2022-11-18 20:29:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 3.012016021361816) internal successors, (2256), 749 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2256 transitions. [2022-11-18 20:29:24,961 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2256 transitions. Word has length 21 [2022-11-18 20:29:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:24,962 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2256 transitions. [2022-11-18 20:29:24,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2256 transitions. [2022-11-18 20:29:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:24,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:24,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:24,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 20:29:25,172 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -787744729, now seen corresponding path program 29 times [2022-11-18 20:29:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:25,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018593136] [2022-11-18 20:29:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018593136] [2022-11-18 20:29:25,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018593136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371985375] [2022-11-18 20:29:25,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:29:25,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:25,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:25,527 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:25,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 20:29:25,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:29:25,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:25,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:29:25,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:25,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:26,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371985375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:26,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:26,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-11-18 20:29:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249861018] [2022-11-18 20:29:26,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:26,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:29:26,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:29:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:29:26,527 INFO L87 Difference]: Start difference. First operand 750 states and 2256 transitions. Second operand has 32 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:30,188 INFO L93 Difference]: Finished difference Result 2210 states and 5976 transitions. [2022-11-18 20:29:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 20:29:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:30,197 INFO L225 Difference]: With dead ends: 2210 [2022-11-18 20:29:30,197 INFO L226 Difference]: Without dead ends: 2166 [2022-11-18 20:29:30,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1272, Invalid=5208, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 20:29:30,199 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 233 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:30,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 16 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:29:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-11-18 20:29:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 960. [2022-11-18 20:29:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.1397288842544318) internal successors, (3011), 959 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3011 transitions. [2022-11-18 20:29:30,246 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3011 transitions. Word has length 21 [2022-11-18 20:29:30,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:30,246 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 3011 transitions. [2022-11-18 20:29:30,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3011 transitions. [2022-11-18 20:29:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:30,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:30,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:30,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-18 20:29:30,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:29:30,456 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash -986734971, now seen corresponding path program 30 times [2022-11-18 20:29:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:30,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128957729] [2022-11-18 20:29:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:30,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128957729] [2022-11-18 20:29:30,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128957729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378674114] [2022-11-18 20:29:30,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:29:30,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:30,757 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:30,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 20:29:30,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:29:30,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:30,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:29:30,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:31,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:31,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378674114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:31,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:31,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 27 [2022-11-18 20:29:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102636750] [2022-11-18 20:29:31,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:31,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:29:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:29:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:29:31,511 INFO L87 Difference]: Start difference. First operand 960 states and 3011 transitions. Second operand has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:33,004 INFO L93 Difference]: Finished difference Result 1646 states and 4516 transitions. [2022-11-18 20:29:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:29:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:33,010 INFO L225 Difference]: With dead ends: 1646 [2022-11-18 20:29:33,011 INFO L226 Difference]: Without dead ends: 1606 [2022-11-18 20:29:33,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=639, Invalid=2441, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:29:33,012 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 197 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:33,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 16 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2022-11-18 20:29:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 988. [2022-11-18 20:29:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 3.139817629179331) internal successors, (3099), 987 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 3099 transitions. [2022-11-18 20:29:33,046 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 3099 transitions. Word has length 21 [2022-11-18 20:29:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:33,046 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 3099 transitions. [2022-11-18 20:29:33,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 3099 transitions. [2022-11-18 20:29:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:29:33,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:33,050 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:33,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-18 20:29:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:29:33,256 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -178629129, now seen corresponding path program 31 times [2022-11-18 20:29:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:33,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299121195] [2022-11-18 20:29:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299121195] [2022-11-18 20:29:33,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299121195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:33,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245666837] [2022-11-18 20:29:33,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:29:33,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:33,560 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:33,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 20:29:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:33,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:29:33,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:33,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:34,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245666837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:34,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:34,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 29 [2022-11-18 20:29:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629815999] [2022-11-18 20:29:34,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:34,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:29:34,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:29:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:29:34,390 INFO L87 Difference]: Start difference. First operand 988 states and 3099 transitions. Second operand has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:35,768 INFO L93 Difference]: Finished difference Result 1754 states and 4892 transitions. [2022-11-18 20:29:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:29:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:29:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:35,776 INFO L225 Difference]: With dead ends: 1754 [2022-11-18 20:29:35,776 INFO L226 Difference]: Without dead ends: 1726 [2022-11-18 20:29:35,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=531, Invalid=2019, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:29:35,777 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 186 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:35,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 12 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:29:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-11-18 20:29:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1054. [2022-11-18 20:29:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 3.1433998100664766) internal successors, (3310), 1053 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 3310 transitions. [2022-11-18 20:29:35,820 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 3310 transitions. Word has length 21 [2022-11-18 20:29:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:35,821 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 3310 transitions. [2022-11-18 20:29:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 3310 transitions. [2022-11-18 20:29:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:29:35,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:35,826 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:35,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:29:36,033 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1444624040, now seen corresponding path program 32 times [2022-11-18 20:29:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970374676] [2022-11-18 20:29:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:36,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:36,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970374676] [2022-11-18 20:29:36,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970374676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:36,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521734671] [2022-11-18 20:29:36,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:29:36,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:36,366 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:36,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 20:29:36,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:29:36,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:36,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:29:36,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:36,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:37,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521734671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:37,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:37,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-11-18 20:29:37,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049637185] [2022-11-18 20:29:37,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:37,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:29:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:29:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:29:37,337 INFO L87 Difference]: Start difference. First operand 1054 states and 3310 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:39,065 INFO L93 Difference]: Finished difference Result 1823 states and 5284 transitions. [2022-11-18 20:29:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:29:39,066 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:29:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:39,070 INFO L225 Difference]: With dead ends: 1823 [2022-11-18 20:29:39,070 INFO L226 Difference]: Without dead ends: 1823 [2022-11-18 20:29:39,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1283, Invalid=3687, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 20:29:39,081 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 378 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:39,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 41 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2022-11-18 20:29:39,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1100. [2022-11-18 20:29:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.1519563239308463) internal successors, (3464), 1099 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 3464 transitions. [2022-11-18 20:29:39,127 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 3464 transitions. Word has length 22 [2022-11-18 20:29:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:39,127 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 3464 transitions. [2022-11-18 20:29:39,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 3464 transitions. [2022-11-18 20:29:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:29:39,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:39,132 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:39,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:39,343 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2004420056, now seen corresponding path program 33 times [2022-11-18 20:29:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:39,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77855319] [2022-11-18 20:29:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:39,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:39,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77855319] [2022-11-18 20:29:39,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77855319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379574692] [2022-11-18 20:29:39,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:29:39,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:39,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:39,671 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:39,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 20:29:39,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:29:39,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:39,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:29:39,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:40,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379574692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:40,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:40,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-18 20:29:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590983986] [2022-11-18 20:29:40,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:29:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:29:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:29:40,381 INFO L87 Difference]: Start difference. First operand 1100 states and 3464 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:49,453 INFO L93 Difference]: Finished difference Result 2956 states and 8290 transitions. [2022-11-18 20:29:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-11-18 20:29:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:29:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:49,461 INFO L225 Difference]: With dead ends: 2956 [2022-11-18 20:29:49,461 INFO L226 Difference]: Without dead ends: 2952 [2022-11-18 20:29:49,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20708 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=11010, Invalid=40292, Unknown=0, NotChecked=0, Total=51302 [2022-11-18 20:29:49,489 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 834 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 51 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:29:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-11-18 20:29:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1384. [2022-11-18 20:29:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.172812725958062) internal successors, (4388), 1383 states have internal predecessors, (4388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 4388 transitions. [2022-11-18 20:29:49,542 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 4388 transitions. Word has length 22 [2022-11-18 20:29:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 4388 transitions. [2022-11-18 20:29:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 4388 transitions. [2022-11-18 20:29:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:29:49,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:49,547 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:49,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:49,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:29:49,754 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash 329485508, now seen corresponding path program 34 times [2022-11-18 20:29:49,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:49,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938462391] [2022-11-18 20:29:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938462391] [2022-11-18 20:29:50,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938462391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559828143] [2022-11-18 20:29:50,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:29:50,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:50,056 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:50,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 20:29:50,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:29:50,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:29:50,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:50,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:50,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559828143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:50,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:50,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-11-18 20:29:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023365593] [2022-11-18 20:29:50,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:50,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:29:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:29:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:29:50,790 INFO L87 Difference]: Start difference. First operand 1384 states and 4388 transitions. Second operand has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:55,360 INFO L93 Difference]: Finished difference Result 3262 states and 9076 transitions. [2022-11-18 20:29:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-18 20:29:55,361 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:29:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:55,374 INFO L225 Difference]: With dead ends: 3262 [2022-11-18 20:29:55,375 INFO L226 Difference]: Without dead ends: 3238 [2022-11-18 20:29:55,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9199 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5241, Invalid=18629, Unknown=0, NotChecked=0, Total=23870 [2022-11-18 20:29:55,378 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 461 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:55,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 37 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:29:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-11-18 20:29:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 1570. [2022-11-18 20:29:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 3.220522625876354) internal successors, (5053), 1569 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5053 transitions. [2022-11-18 20:29:55,448 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5053 transitions. Word has length 22 [2022-11-18 20:29:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:55,449 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 5053 transitions. [2022-11-18 20:29:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5053 transitions. [2022-11-18 20:29:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:29:55,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:55,454 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:55,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-18 20:29:55,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-18 20:29:55,660 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:29:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1785293926, now seen corresponding path program 35 times [2022-11-18 20:29:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:55,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7153570] [2022-11-18 20:29:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:55,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7153570] [2022-11-18 20:29:55,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7153570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:55,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670502763] [2022-11-18 20:29:55,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:29:55,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:55,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:55,967 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:55,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:29:56,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:29:56,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:56,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:29:56,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:56,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:56,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670502763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:56,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:56,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2022-11-18 20:29:56,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119440004] [2022-11-18 20:29:56,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:29:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:29:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:29:56,736 INFO L87 Difference]: Start difference. First operand 1570 states and 5053 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:00,841 INFO L93 Difference]: Finished difference Result 2978 states and 8658 transitions. [2022-11-18 20:30:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-18 20:30:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:00,851 INFO L225 Difference]: With dead ends: 2978 [2022-11-18 20:30:00,851 INFO L226 Difference]: Without dead ends: 2918 [2022-11-18 20:30:00,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2650, Invalid=7052, Unknown=0, NotChecked=0, Total=9702 [2022-11-18 20:30:00,854 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 502 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:00,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 33 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:30:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2022-11-18 20:30:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1248. [2022-11-18 20:30:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.1226944667201284) internal successors, (3894), 1247 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 3894 transitions. [2022-11-18 20:30:00,956 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 3894 transitions. Word has length 22 [2022-11-18 20:30:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 3894 transitions. [2022-11-18 20:30:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 3894 transitions. [2022-11-18 20:30:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:00,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:00,959 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:00,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:01,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:01,160 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1793143876, now seen corresponding path program 36 times [2022-11-18 20:30:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:01,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987454027] [2022-11-18 20:30:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:01,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:01,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987454027] [2022-11-18 20:30:01,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987454027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:01,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429884434] [2022-11-18 20:30:01,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:30:01,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:01,475 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:01,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:30:01,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:30:01,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:01,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:30:01,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:01,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:02,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429884434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:02,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:02,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2022-11-18 20:30:02,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325298152] [2022-11-18 20:30:02,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:30:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:30:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:30:02,213 INFO L87 Difference]: Start difference. First operand 1248 states and 3894 transitions. Second operand has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:04,868 INFO L93 Difference]: Finished difference Result 2890 states and 8271 transitions. [2022-11-18 20:30:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 20:30:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:04,876 INFO L225 Difference]: With dead ends: 2890 [2022-11-18 20:30:04,877 INFO L226 Difference]: Without dead ends: 2798 [2022-11-18 20:30:04,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2123, Invalid=5533, Unknown=0, NotChecked=0, Total=7656 [2022-11-18 20:30:04,878 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 527 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:04,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 16 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:30:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-18 20:30:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1434. [2022-11-18 20:30:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.1758548499651083) internal successors, (4551), 1433 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 4551 transitions. [2022-11-18 20:30:04,949 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 4551 transitions. Word has length 22 [2022-11-18 20:30:04,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:04,949 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 4551 transitions. [2022-11-18 20:30:04,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.606060606060606) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 4551 transitions. [2022-11-18 20:30:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:04,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:04,954 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:04,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:05,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:05,159 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash -42535784, now seen corresponding path program 37 times [2022-11-18 20:30:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:05,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254534241] [2022-11-18 20:30:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:05,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:05,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254534241] [2022-11-18 20:30:05,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254534241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:05,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510590386] [2022-11-18 20:30:05,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:30:05,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:05,463 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:05,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:30:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:05,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:30:05,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:05,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:06,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510590386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:06,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:06,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 33 [2022-11-18 20:30:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51776930] [2022-11-18 20:30:06,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:30:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:30:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:30:06,159 INFO L87 Difference]: Start difference. First operand 1434 states and 4551 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:08,126 INFO L93 Difference]: Finished difference Result 2893 states and 8574 transitions. [2022-11-18 20:30:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:30:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:08,131 INFO L225 Difference]: With dead ends: 2893 [2022-11-18 20:30:08,131 INFO L226 Difference]: Without dead ends: 2813 [2022-11-18 20:30:08,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1686, Invalid=4476, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 20:30:08,132 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 373 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:08,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 17 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:30:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-11-18 20:30:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1654. [2022-11-18 20:30:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 3.162129461584997) internal successors, (5227), 1653 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 5227 transitions. [2022-11-18 20:30:08,189 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 5227 transitions. Word has length 22 [2022-11-18 20:30:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:08,190 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 5227 transitions. [2022-11-18 20:30:08,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 5227 transitions. [2022-11-18 20:30:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:08,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:08,195 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:08,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:08,401 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -173480233, now seen corresponding path program 38 times [2022-11-18 20:30:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:08,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894907815] [2022-11-18 20:30:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:08,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894907815] [2022-11-18 20:30:08,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894907815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901294719] [2022-11-18 20:30:08,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:08,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:08,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:08,699 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:08,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:30:08,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:08,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:08,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:30:08,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:08,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:09,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901294719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:09,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:09,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 31 [2022-11-18 20:30:09,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139639844] [2022-11-18 20:30:09,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:30:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:30:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:30:09,641 INFO L87 Difference]: Start difference. First operand 1654 states and 5227 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:10,779 INFO L93 Difference]: Finished difference Result 2240 states and 6588 transitions. [2022-11-18 20:30:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:30:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:10,784 INFO L225 Difference]: With dead ends: 2240 [2022-11-18 20:30:10,784 INFO L226 Difference]: Without dead ends: 2212 [2022-11-18 20:30:10,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=541, Invalid=2009, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:30:10,785 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 194 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:10,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 14 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:30:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2022-11-18 20:30:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1554. [2022-11-18 20:30:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 3.1262073406310367) internal successors, (4855), 1553 states have internal predecessors, (4855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 4855 transitions. [2022-11-18 20:30:10,817 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 4855 transitions. Word has length 22 [2022-11-18 20:30:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:10,818 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 4855 transitions. [2022-11-18 20:30:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 4855 transitions. [2022-11-18 20:30:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:10,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:10,823 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:10,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:11,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 20:30:11,029 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:11,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1258059264, now seen corresponding path program 39 times [2022-11-18 20:30:11,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:11,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132102143] [2022-11-18 20:30:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132102143] [2022-11-18 20:30:11,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132102143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521017474] [2022-11-18 20:30:11,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:30:11,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:11,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:11,259 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:11,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 20:30:11,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:30:11,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:11,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:30:11,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:30:11,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521017474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:11,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:11,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 31 [2022-11-18 20:30:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423577181] [2022-11-18 20:30:11,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:11,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:30:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:30:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:30:11,913 INFO L87 Difference]: Start difference. First operand 1554 states and 4855 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:13,892 INFO L93 Difference]: Finished difference Result 2294 states and 6591 transitions. [2022-11-18 20:30:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:30:13,893 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:13,897 INFO L225 Difference]: With dead ends: 2294 [2022-11-18 20:30:13,897 INFO L226 Difference]: Without dead ends: 2206 [2022-11-18 20:30:13,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2226 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1547, Invalid=5593, Unknown=0, NotChecked=0, Total=7140 [2022-11-18 20:30:13,898 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 502 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:13,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 18 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:30:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-11-18 20:30:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1688. [2022-11-18 20:30:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 3.136929460580913) internal successors, (5292), 1687 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 5292 transitions. [2022-11-18 20:30:13,949 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 5292 transitions. Word has length 22 [2022-11-18 20:30:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:13,949 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 5292 transitions. [2022-11-18 20:30:13,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 5292 transitions. [2022-11-18 20:30:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:30:13,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:13,952 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:13,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-18 20:30:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:14,153 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:14,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -988571133, now seen corresponding path program 40 times [2022-11-18 20:30:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:14,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124079654] [2022-11-18 20:30:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124079654] [2022-11-18 20:30:14,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124079654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799093521] [2022-11-18 20:30:14,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:30:14,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:14,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:14,427 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:14,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 20:30:14,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:30:14,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:14,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:30:14,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:14,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799093521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:15,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 31 [2022-11-18 20:30:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164170350] [2022-11-18 20:30:15,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:30:15,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:30:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:30:15,495 INFO L87 Difference]: Start difference. First operand 1688 states and 5292 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:17,136 INFO L93 Difference]: Finished difference Result 2406 states and 7036 transitions. [2022-11-18 20:30:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:30:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:30:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:17,140 INFO L225 Difference]: With dead ends: 2406 [2022-11-18 20:30:17,140 INFO L226 Difference]: Without dead ends: 2396 [2022-11-18 20:30:17,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=653, Invalid=2427, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:30:17,141 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 176 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:17,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 11 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:30:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-11-18 20:30:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1616. [2022-11-18 20:30:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 3.123219814241486) internal successors, (5044), 1615 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 5044 transitions. [2022-11-18 20:30:17,176 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 5044 transitions. Word has length 22 [2022-11-18 20:30:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:17,176 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 5044 transitions. [2022-11-18 20:30:17,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 5044 transitions. [2022-11-18 20:30:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:17,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:17,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:17,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:17,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:17,380 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1111180472, now seen corresponding path program 41 times [2022-11-18 20:30:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:17,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945036613] [2022-11-18 20:30:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:17,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945036613] [2022-11-18 20:30:17,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945036613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:17,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848548868] [2022-11-18 20:30:17,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:30:17,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:17,605 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:17,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 20:30:17,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:30:17,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:30:17,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:17,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:18,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848548868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:18,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:18,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 16 [2022-11-18 20:30:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583320593] [2022-11-18 20:30:18,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:30:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:30:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:30:18,200 INFO L87 Difference]: Start difference. First operand 1616 states and 5044 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:18,521 INFO L93 Difference]: Finished difference Result 2219 states and 6989 transitions. [2022-11-18 20:30:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:30:18,522 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:18,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:18,525 INFO L225 Difference]: With dead ends: 2219 [2022-11-18 20:30:18,525 INFO L226 Difference]: Without dead ends: 2184 [2022-11-18 20:30:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:30:18,526 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 140 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:18,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 50 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:30:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-11-18 20:30:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2082. [2022-11-18 20:30:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2081 states have (on average 3.2075925036040367) internal successors, (6675), 2081 states have internal predecessors, (6675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 6675 transitions. [2022-11-18 20:30:18,578 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 6675 transitions. Word has length 23 [2022-11-18 20:30:18,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:18,579 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 6675 transitions. [2022-11-18 20:30:18,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 6675 transitions. [2022-11-18 20:30:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:18,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:18,584 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:18,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-18 20:30:18,789 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -383517050, now seen corresponding path program 42 times [2022-11-18 20:30:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:18,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862124459] [2022-11-18 20:30:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:19,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:19,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862124459] [2022-11-18 20:30:19,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862124459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171903058] [2022-11-18 20:30:19,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:30:19,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:19,158 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:19,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 20:30:19,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:30:19,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:19,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:30:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:19,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:20,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171903058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:20,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:20,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-11-18 20:30:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991420433] [2022-11-18 20:30:20,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:20,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:30:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:30:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:30:20,746 INFO L87 Difference]: Start difference. First operand 2082 states and 6675 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:24,058 INFO L93 Difference]: Finished difference Result 2932 states and 8685 transitions. [2022-11-18 20:30:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:30:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:24,064 INFO L225 Difference]: With dead ends: 2932 [2022-11-18 20:30:24,064 INFO L226 Difference]: Without dead ends: 2926 [2022-11-18 20:30:24,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1385, Invalid=5095, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 20:30:24,065 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 332 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:24,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 63 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:30:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-11-18 20:30:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1852. [2022-11-18 20:30:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 3.273905996758509) internal successors, (6060), 1851 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 6060 transitions. [2022-11-18 20:30:24,127 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 6060 transitions. Word has length 23 [2022-11-18 20:30:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:24,128 INFO L495 AbstractCegarLoop]: Abstraction has 1852 states and 6060 transitions. [2022-11-18 20:30:24,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 6060 transitions. [2022-11-18 20:30:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:24,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:24,133 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:24,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 20:30:24,337 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2058451598, now seen corresponding path program 43 times [2022-11-18 20:30:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147624498] [2022-11-18 20:30:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:24,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:24,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147624498] [2022-11-18 20:30:24,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147624498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:24,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628418138] [2022-11-18 20:30:24,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:30:24,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:24,699 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:24,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-18 20:30:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:24,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:30:24,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:25,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:26,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628418138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:26,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:26,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-11-18 20:30:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313512634] [2022-11-18 20:30:26,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:26,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:30:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:30:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:30:26,262 INFO L87 Difference]: Start difference. First operand 1852 states and 6060 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:29,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:29,087 INFO L93 Difference]: Finished difference Result 2866 states and 8310 transitions. [2022-11-18 20:30:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 20:30:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:29,093 INFO L225 Difference]: With dead ends: 2866 [2022-11-18 20:30:29,093 INFO L226 Difference]: Without dead ends: 2854 [2022-11-18 20:30:29,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1131, Invalid=4569, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 20:30:29,094 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 312 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:29,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 33 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:30:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-11-18 20:30:29,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1560. [2022-11-18 20:30:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.2315586914688903) internal successors, (5038), 1559 states have internal predecessors, (5038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5038 transitions. [2022-11-18 20:30:29,164 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 5038 transitions. Word has length 23 [2022-11-18 20:30:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:29,165 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 5038 transitions. [2022-11-18 20:30:29,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 5038 transitions. [2022-11-18 20:30:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:29,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:29,169 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:29,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-18 20:30:29,375 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 345663390, now seen corresponding path program 44 times [2022-11-18 20:30:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391583885] [2022-11-18 20:30:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:29,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:29,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391583885] [2022-11-18 20:30:29,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391583885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:29,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102046924] [2022-11-18 20:30:29,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:29,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:29,720 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-18 20:30:29,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:29,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:29,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:30:29,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:30,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:30,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102046924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:30,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:30,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2022-11-18 20:30:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833553097] [2022-11-18 20:30:30,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:30:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:30:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:30:30,848 INFO L87 Difference]: Start difference. First operand 1560 states and 5038 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:35,297 INFO L93 Difference]: Finished difference Result 3540 states and 9842 transitions. [2022-11-18 20:30:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-18 20:30:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:35,306 INFO L225 Difference]: With dead ends: 3540 [2022-11-18 20:30:35,306 INFO L226 Difference]: Without dead ends: 3500 [2022-11-18 20:30:35,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1970, Invalid=7342, Unknown=0, NotChecked=0, Total=9312 [2022-11-18 20:30:35,307 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 385 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:35,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 34 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:30:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-11-18 20:30:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 1758. [2022-11-18 20:30:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 3.300512236767217) internal successors, (5799), 1757 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 5799 transitions. [2022-11-18 20:30:35,367 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 5799 transitions. Word has length 23 [2022-11-18 20:30:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:35,367 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 5799 transitions. [2022-11-18 20:30:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 5799 transitions. [2022-11-18 20:30:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:35,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:35,371 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:35,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-11-18 20:30:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-11-18 20:30:35,572 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -313754062, now seen corresponding path program 45 times [2022-11-18 20:30:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101840777] [2022-11-18 20:30:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:35,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101840777] [2022-11-18 20:30:35,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101840777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:35,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510882938] [2022-11-18 20:30:35,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:30:35,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:35,923 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:35,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-18 20:30:36,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:30:36,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:36,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:30:36,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:36,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:37,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510882938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:37,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:37,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-11-18 20:30:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029497459] [2022-11-18 20:30:37,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:30:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:30:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:30:37,022 INFO L87 Difference]: Start difference. First operand 1758 states and 5799 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:40,809 INFO L93 Difference]: Finished difference Result 3715 states and 10888 transitions. [2022-11-18 20:30:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 20:30:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:40,818 INFO L225 Difference]: With dead ends: 3715 [2022-11-18 20:30:40,818 INFO L226 Difference]: Without dead ends: 3660 [2022-11-18 20:30:40,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1567, Invalid=7363, Unknown=0, NotChecked=0, Total=8930 [2022-11-18 20:30:40,819 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 410 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:40,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 22 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:30:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2022-11-18 20:30:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 1702. [2022-11-18 20:30:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 3.3303938859494413) internal successors, (5665), 1701 states have internal predecessors, (5665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 5665 transitions. [2022-11-18 20:30:40,867 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 5665 transitions. Word has length 23 [2022-11-18 20:30:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:40,868 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 5665 transitions. [2022-11-18 20:30:40,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 5665 transitions. [2022-11-18 20:30:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:40,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:40,873 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:40,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:41,079 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash 264183134, now seen corresponding path program 46 times [2022-11-18 20:30:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826041711] [2022-11-18 20:30:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:41,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826041711] [2022-11-18 20:30:41,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826041711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:41,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674961045] [2022-11-18 20:30:41,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:30:41,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:41,431 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:41,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-18 20:30:41,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:30:41,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:41,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:30:41,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:42,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:42,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674961045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:42,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:42,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2022-11-18 20:30:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972281810] [2022-11-18 20:30:42,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:42,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:30:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:30:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:30:42,558 INFO L87 Difference]: Start difference. First operand 1702 states and 5665 transitions. Second operand has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:46,904 INFO L93 Difference]: Finished difference Result 3754 states and 10644 transitions. [2022-11-18 20:30:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-18 20:30:46,904 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:46,910 INFO L225 Difference]: With dead ends: 3754 [2022-11-18 20:30:46,911 INFO L226 Difference]: Without dead ends: 3644 [2022-11-18 20:30:46,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4877 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3018, Invalid=11024, Unknown=0, NotChecked=0, Total=14042 [2022-11-18 20:30:46,912 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 451 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:46,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 19 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:30:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-11-18 20:30:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 1922. [2022-11-18 20:30:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.3248308172826655) internal successors, (6387), 1921 states have internal predecessors, (6387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 6387 transitions. [2022-11-18 20:30:46,965 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 6387 transitions. Word has length 23 [2022-11-18 20:30:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:46,965 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 6387 transitions. [2022-11-18 20:30:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 6387 transitions. [2022-11-18 20:30:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:46,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:46,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:46,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:47,176 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash 949643694, now seen corresponding path program 47 times [2022-11-18 20:30:47,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257966188] [2022-11-18 20:30:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:47,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257966188] [2022-11-18 20:30:47,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257966188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:47,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818953163] [2022-11-18 20:30:47,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:30:47,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:47,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:47,612 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:47,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-18 20:30:47,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:30:47,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:47,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:30:47,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:47,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:30:48,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818953163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:48,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:48,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 35 [2022-11-18 20:30:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879416689] [2022-11-18 20:30:48,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:48,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:30:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:30:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:30:48,341 INFO L87 Difference]: Start difference. First operand 1922 states and 6387 transitions. Second operand has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:49,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:49,971 INFO L93 Difference]: Finished difference Result 3140 states and 9279 transitions. [2022-11-18 20:30:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 20:30:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:49,985 INFO L225 Difference]: With dead ends: 3140 [2022-11-18 20:30:49,985 INFO L226 Difference]: Without dead ends: 3076 [2022-11-18 20:30:49,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1996 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1276, Invalid=4730, Unknown=0, NotChecked=0, Total=6006 [2022-11-18 20:30:49,986 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 346 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:49,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 17 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:30:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-11-18 20:30:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1896. [2022-11-18 20:30:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 3.3266490765171506) internal successors, (6304), 1895 states have internal predecessors, (6304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 6304 transitions. [2022-11-18 20:30:50,026 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 6304 transitions. Word has length 23 [2022-11-18 20:30:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:50,026 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 6304 transitions. [2022-11-18 20:30:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 6304 transitions. [2022-11-18 20:30:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:50,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:50,029 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:50,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-18 20:30:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:50,231 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1774347118, now seen corresponding path program 48 times [2022-11-18 20:30:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156216632] [2022-11-18 20:30:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:50,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156216632] [2022-11-18 20:30:50,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156216632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739371688] [2022-11-18 20:30:50,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:30:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:50,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:50,560 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:50,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-18 20:30:50,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:30:50,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:50,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:30:50,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:51,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:51,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739371688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:51,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:51,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2022-11-18 20:30:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66369573] [2022-11-18 20:30:51,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:51,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:30:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:30:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:30:51,662 INFO L87 Difference]: Start difference. First operand 1896 states and 6304 transitions. Second operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:53,030 INFO L93 Difference]: Finished difference Result 2594 states and 7837 transitions. [2022-11-18 20:30:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:30:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:53,041 INFO L225 Difference]: With dead ends: 2594 [2022-11-18 20:30:53,041 INFO L226 Difference]: Without dead ends: 2530 [2022-11-18 20:30:53,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=841, Invalid=3581, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 20:30:53,042 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 247 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:53,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 15 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:30:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-11-18 20:30:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1700. [2022-11-18 20:30:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1699 states have (on average 3.316068275456151) internal successors, (5634), 1699 states have internal predecessors, (5634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 5634 transitions. [2022-11-18 20:30:53,085 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 5634 transitions. Word has length 23 [2022-11-18 20:30:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:53,085 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 5634 transitions. [2022-11-18 20:30:53,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 5634 transitions. [2022-11-18 20:30:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:53,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:53,090 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:53,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:53,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:53,295 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:53,295 INFO L85 PathProgramCache]: Analyzing trace with hash 381906030, now seen corresponding path program 49 times [2022-11-18 20:30:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950307941] [2022-11-18 20:30:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:53,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950307941] [2022-11-18 20:30:53,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950307941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105704308] [2022-11-18 20:30:53,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:30:53,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:53,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:53,569 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:53,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-18 20:30:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:53,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:30:53,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:53,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:54,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105704308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:54,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:54,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 34 [2022-11-18 20:30:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599964525] [2022-11-18 20:30:54,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:54,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:30:54,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:30:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=929, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:30:54,703 INFO L87 Difference]: Start difference. First operand 1700 states and 5634 transitions. Second operand has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:56,524 INFO L93 Difference]: Finished difference Result 2712 states and 7946 transitions. [2022-11-18 20:30:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 20:30:56,525 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:56,529 INFO L225 Difference]: With dead ends: 2712 [2022-11-18 20:30:56,529 INFO L226 Difference]: Without dead ends: 2692 [2022-11-18 20:30:56,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=760, Invalid=3146, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 20:30:56,530 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 231 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:56,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 13 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:30:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-11-18 20:30:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1834. [2022-11-18 20:30:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.324058919803601) internal successors, (6093), 1833 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6093 transitions. [2022-11-18 20:30:56,566 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6093 transitions. Word has length 23 [2022-11-18 20:30:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:56,566 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 6093 transitions. [2022-11-18 20:30:56,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.457142857142857) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6093 transitions. [2022-11-18 20:30:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:30:56,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:56,569 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:56,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-11-18 20:30:56,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:56,770 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:30:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash -880342571, now seen corresponding path program 50 times [2022-11-18 20:30:56,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:56,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273712253] [2022-11-18 20:30:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:57,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:57,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273712253] [2022-11-18 20:30:57,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273712253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:57,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563960189] [2022-11-18 20:30:57,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:57,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:57,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:57,126 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-18 20:30:57,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:57,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:57,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:30:57,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:57,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563960189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:58,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:58,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-11-18 20:30:58,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451601603] [2022-11-18 20:30:58,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:58,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:30:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:30:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:30:58,307 INFO L87 Difference]: Start difference. First operand 1834 states and 6093 transitions. Second operand has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:00,379 INFO L93 Difference]: Finished difference Result 2923 states and 9056 transitions. [2022-11-18 20:31:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 20:31:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:00,385 INFO L225 Difference]: With dead ends: 2923 [2022-11-18 20:31:00,385 INFO L226 Difference]: Without dead ends: 2923 [2022-11-18 20:31:00,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2072, Invalid=5760, Unknown=0, NotChecked=0, Total=7832 [2022-11-18 20:31:00,386 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 376 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:00,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 61 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:31:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-11-18 20:31:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1942. [2022-11-18 20:31:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 3.3302421432251417) internal successors, (6464), 1941 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 6464 transitions. [2022-11-18 20:31:00,442 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 6464 transitions. Word has length 24 [2022-11-18 20:31:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:00,442 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 6464 transitions. [2022-11-18 20:31:00,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 6464 transitions. [2022-11-18 20:31:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:00,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:00,447 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:00,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-18 20:31:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-11-18 20:31:00,648 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2077694621, now seen corresponding path program 51 times [2022-11-18 20:31:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518598517] [2022-11-18 20:31:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:00,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:00,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518598517] [2022-11-18 20:31:00,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518598517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:00,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16886379] [2022-11-18 20:31:00,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:31:00,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:00,955 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:00,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-18 20:31:01,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:31:01,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:31:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:01,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:01,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16886379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:01,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:01,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-11-18 20:31:01,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326098743] [2022-11-18 20:31:01,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:01,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:31:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:01,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:31:01,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:31:01,847 INFO L87 Difference]: Start difference. First operand 1942 states and 6464 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:08,400 INFO L93 Difference]: Finished difference Result 4317 states and 13026 transitions. [2022-11-18 20:31:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-18 20:31:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:08,410 INFO L225 Difference]: With dead ends: 4317 [2022-11-18 20:31:08,410 INFO L226 Difference]: Without dead ends: 4285 [2022-11-18 20:31:08,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8801 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7245, Invalid=18837, Unknown=0, NotChecked=0, Total=26082 [2022-11-18 20:31:08,412 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 515 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:08,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 51 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:31:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2022-11-18 20:31:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 1972. [2022-11-18 20:31:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1971 states have (on average 3.30441400304414) internal successors, (6513), 1971 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 6513 transitions. [2022-11-18 20:31:08,479 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 6513 transitions. Word has length 24 [2022-11-18 20:31:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:08,480 INFO L495 AbstractCegarLoop]: Abstraction has 1972 states and 6513 transitions. [2022-11-18 20:31:08,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 37 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 6513 transitions. [2022-11-18 20:31:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:08,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:08,485 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:08,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:08,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-18 20:31:08,690 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:08,691 INFO L85 PathProgramCache]: Analyzing trace with hash 102693377, now seen corresponding path program 52 times [2022-11-18 20:31:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:08,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454560365] [2022-11-18 20:31:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454560365] [2022-11-18 20:31:08,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454560365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872232968] [2022-11-18 20:31:08,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:31:08,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:08,977 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:09,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-18 20:31:09,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:31:09,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:09,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:31:09,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:09,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:09,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872232968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:09,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:09,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-11-18 20:31:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479193966] [2022-11-18 20:31:09,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:09,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:31:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:31:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:31:09,832 INFO L87 Difference]: Start difference. First operand 1972 states and 6513 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:15,052 INFO L93 Difference]: Finished difference Result 4493 states and 13076 transitions. [2022-11-18 20:31:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-11-18 20:31:15,053 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:15,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:15,061 INFO L225 Difference]: With dead ends: 4493 [2022-11-18 20:31:15,061 INFO L226 Difference]: Without dead ends: 4374 [2022-11-18 20:31:15,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7173 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5176, Invalid=15416, Unknown=0, NotChecked=0, Total=20592 [2022-11-18 20:31:15,063 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 618 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:15,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 37 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:31:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2022-11-18 20:31:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 1888. [2022-11-18 20:31:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.2829888712241653) internal successors, (6195), 1887 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6195 transitions. [2022-11-18 20:31:15,119 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6195 transitions. Word has length 24 [2022-11-18 20:31:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:15,119 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 6195 transitions. [2022-11-18 20:31:15,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6195 transitions. [2022-11-18 20:31:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:15,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:15,123 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:15,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-11-18 20:31:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-18 20:31:15,324 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash 346041827, now seen corresponding path program 53 times [2022-11-18 20:31:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739432639] [2022-11-18 20:31:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:15,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739432639] [2022-11-18 20:31:15,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739432639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195910675] [2022-11-18 20:31:15,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:31:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:15,704 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:15,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-18 20:31:15,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:31:15,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:15,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:31:15,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:16,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:16,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195910675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:16,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:16,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2022-11-18 20:31:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363032014] [2022-11-18 20:31:16,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:31:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:31:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:31:16,514 INFO L87 Difference]: Start difference. First operand 1888 states and 6195 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:21,186 INFO L93 Difference]: Finished difference Result 4405 states and 12907 transitions. [2022-11-18 20:31:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-18 20:31:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:21,195 INFO L225 Difference]: With dead ends: 4405 [2022-11-18 20:31:21,195 INFO L226 Difference]: Without dead ends: 4293 [2022-11-18 20:31:21,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4633, Invalid=12659, Unknown=0, NotChecked=0, Total=17292 [2022-11-18 20:31:21,196 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 562 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:21,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 40 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:31:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2022-11-18 20:31:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2076. [2022-11-18 20:31:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 3.277590361445783) internal successors, (6801), 2075 states have internal predecessors, (6801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 6801 transitions. [2022-11-18 20:31:21,248 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 6801 transitions. Word has length 24 [2022-11-18 20:31:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:21,248 INFO L495 AbstractCegarLoop]: Abstraction has 2076 states and 6801 transitions. [2022-11-18 20:31:21,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 6801 transitions. [2022-11-18 20:31:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:21,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:21,252 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:21,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-11-18 20:31:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-18 20:31:21,452 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -725452785, now seen corresponding path program 54 times [2022-11-18 20:31:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:21,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439719449] [2022-11-18 20:31:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439719449] [2022-11-18 20:31:21,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439719449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229774618] [2022-11-18 20:31:21,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:31:21,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:21,742 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:21,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-18 20:31:21,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:31:21,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:31:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:22,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:22,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229774618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:22,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:22,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 38 [2022-11-18 20:31:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680268126] [2022-11-18 20:31:22,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:22,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:31:22,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:31:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:31:22,545 INFO L87 Difference]: Start difference. First operand 2076 states and 6801 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:25,543 INFO L93 Difference]: Finished difference Result 3933 states and 11792 transitions. [2022-11-18 20:31:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 20:31:25,544 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:25,551 INFO L225 Difference]: With dead ends: 3933 [2022-11-18 20:31:25,551 INFO L226 Difference]: Without dead ends: 3829 [2022-11-18 20:31:25,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3434 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2797, Invalid=7709, Unknown=0, NotChecked=0, Total=10506 [2022-11-18 20:31:25,552 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 445 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:25,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 23 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:31:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2022-11-18 20:31:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2034. [2022-11-18 20:31:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 3.2700442695523857) internal successors, (6648), 2033 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 6648 transitions. [2022-11-18 20:31:25,596 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 6648 transitions. Word has length 24 [2022-11-18 20:31:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:25,597 INFO L495 AbstractCegarLoop]: Abstraction has 2034 states and 6648 transitions. [2022-11-18 20:31:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 6648 transitions. [2022-11-18 20:31:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:25,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:25,600 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:25,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-11-18 20:31:25,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:25,801 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1018049827, now seen corresponding path program 55 times [2022-11-18 20:31:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:25,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125467200] [2022-11-18 20:31:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:26,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125467200] [2022-11-18 20:31:26,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125467200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:26,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125551338] [2022-11-18 20:31:26,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:31:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:26,116 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:26,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-18 20:31:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:31:26,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:26,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:27,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125551338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:27,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:27,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 37 [2022-11-18 20:31:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992696449] [2022-11-18 20:31:27,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:31:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:31:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:31:27,136 INFO L87 Difference]: Start difference. First operand 2034 states and 6648 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:30,207 INFO L93 Difference]: Finished difference Result 4416 states and 12832 transitions. [2022-11-18 20:31:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 20:31:30,207 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:30,215 INFO L225 Difference]: With dead ends: 4416 [2022-11-18 20:31:30,215 INFO L226 Difference]: Without dead ends: 4344 [2022-11-18 20:31:30,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4210 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3411, Invalid=9021, Unknown=0, NotChecked=0, Total=12432 [2022-11-18 20:31:30,216 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 629 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:30,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 15 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:31:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-11-18 20:31:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 2360. [2022-11-18 20:31:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.281475201356507) internal successors, (7741), 2359 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 7741 transitions. [2022-11-18 20:31:30,277 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 7741 transitions. Word has length 24 [2022-11-18 20:31:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:30,277 INFO L495 AbstractCegarLoop]: Abstraction has 2360 states and 7741 transitions. [2022-11-18 20:31:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 7741 transitions. [2022-11-18 20:31:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:30,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:30,284 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:30,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-11-18 20:31:30,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:30,490 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 48787797, now seen corresponding path program 56 times [2022-11-18 20:31:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:30,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764975001] [2022-11-18 20:31:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764975001] [2022-11-18 20:31:30,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764975001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759335922] [2022-11-18 20:31:30,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:31:30,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:30,767 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:30,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-18 20:31:30,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:31:30,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:30,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:31:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:31,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:31,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759335922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:31,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:31,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 40 [2022-11-18 20:31:31,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999580505] [2022-11-18 20:31:31,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:31,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:31:31,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:31:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:31:31,769 INFO L87 Difference]: Start difference. First operand 2360 states and 7741 transitions. Second operand has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:34,798 INFO L93 Difference]: Finished difference Result 4110 states and 12139 transitions. [2022-11-18 20:31:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 20:31:34,799 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:34,805 INFO L225 Difference]: With dead ends: 4110 [2022-11-18 20:31:34,806 INFO L226 Difference]: Without dead ends: 4054 [2022-11-18 20:31:34,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2951, Invalid=7969, Unknown=0, NotChecked=0, Total=10920 [2022-11-18 20:31:34,806 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 325 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:34,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 17 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:31:34,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2022-11-18 20:31:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 2558. [2022-11-18 20:31:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2557 states have (on average 3.2725850606179114) internal successors, (8368), 2557 states have internal predecessors, (8368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 8368 transitions. [2022-11-18 20:31:34,888 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 8368 transitions. Word has length 24 [2022-11-18 20:31:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:34,888 INFO L495 AbstractCegarLoop]: Abstraction has 2558 states and 8368 transitions. [2022-11-18 20:31:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.5) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 8368 transitions. [2022-11-18 20:31:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:34,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:34,895 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:34,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:35,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:35,101 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash 749244475, now seen corresponding path program 57 times [2022-11-18 20:31:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:35,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177749112] [2022-11-18 20:31:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:35,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:35,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177749112] [2022-11-18 20:31:35,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177749112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:35,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822612577] [2022-11-18 20:31:35,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:31:35,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:35,443 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:35,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-18 20:31:35,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:31:35,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:35,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:31:35,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:36,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:36,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822612577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:36,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:36,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 40 [2022-11-18 20:31:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358332344] [2022-11-18 20:31:36,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:31:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:31:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:31:36,420 INFO L87 Difference]: Start difference. First operand 2558 states and 8368 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:41,787 INFO L93 Difference]: Finished difference Result 5206 states and 15416 transitions. [2022-11-18 20:31:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-18 20:31:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:41,798 INFO L225 Difference]: With dead ends: 5206 [2022-11-18 20:31:41,798 INFO L226 Difference]: Without dead ends: 5036 [2022-11-18 20:31:41,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5643 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3946, Invalid=12824, Unknown=0, NotChecked=0, Total=16770 [2022-11-18 20:31:41,799 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 411 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:41,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 16 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:31:41,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-11-18 20:31:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 2832. [2022-11-18 20:31:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 3.2755210173083715) internal successors, (9273), 2831 states have internal predecessors, (9273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 9273 transitions. [2022-11-18 20:31:41,903 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 9273 transitions. Word has length 24 [2022-11-18 20:31:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:41,904 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 9273 transitions. [2022-11-18 20:31:41,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 9273 transitions. [2022-11-18 20:31:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:41,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:41,909 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:41,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-11-18 20:31:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-11-18 20:31:42,110 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -547576521, now seen corresponding path program 58 times [2022-11-18 20:31:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:42,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796367405] [2022-11-18 20:31:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796367405] [2022-11-18 20:31:42,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796367405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031909376] [2022-11-18 20:31:42,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:31:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:42,395 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:42,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-18 20:31:42,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:31:42,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:42,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:31:42,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:43,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:31:43,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031909376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:43,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:43,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 35 [2022-11-18 20:31:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067897799] [2022-11-18 20:31:43,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:31:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:31:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:31:43,401 INFO L87 Difference]: Start difference. First operand 2832 states and 9273 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:46,684 INFO L93 Difference]: Finished difference Result 4122 states and 12344 transitions. [2022-11-18 20:31:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-18 20:31:46,684 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:46,691 INFO L225 Difference]: With dead ends: 4122 [2022-11-18 20:31:46,691 INFO L226 Difference]: Without dead ends: 3986 [2022-11-18 20:31:46,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4564 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2880, Invalid=10460, Unknown=0, NotChecked=0, Total=13340 [2022-11-18 20:31:46,692 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 559 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:46,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 22 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:31:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-11-18 20:31:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 2918. [2022-11-18 20:31:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2917 states have (on average 3.2622557422008915) internal successors, (9516), 2917 states have internal predecessors, (9516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 9516 transitions. [2022-11-18 20:31:46,781 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 9516 transitions. Word has length 24 [2022-11-18 20:31:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:46,781 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 9516 transitions. [2022-11-18 20:31:46,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 9516 transitions. [2022-11-18 20:31:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:46,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:46,789 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:46,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:46,995 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 118792398, now seen corresponding path program 59 times [2022-11-18 20:31:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430428589] [2022-11-18 20:31:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:46,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430428589] [2022-11-18 20:31:47,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430428589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450483466] [2022-11-18 20:31:47,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:31:47,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:47,267 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:47,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-18 20:31:47,398 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:31:47,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:31:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:47,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:48,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450483466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:48,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:48,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 36 [2022-11-18 20:31:48,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109470032] [2022-11-18 20:31:48,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:48,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:31:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:31:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1054, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:31:48,580 INFO L87 Difference]: Start difference. First operand 2918 states and 9516 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:50,709 INFO L93 Difference]: Finished difference Result 4386 states and 12994 transitions. [2022-11-18 20:31:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:31:50,710 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:50,718 INFO L225 Difference]: With dead ends: 4386 [2022-11-18 20:31:50,718 INFO L226 Difference]: Without dead ends: 4342 [2022-11-18 20:31:50,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1114, Invalid=4586, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 20:31:50,719 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 207 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:50,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 17 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:31:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2022-11-18 20:31:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 3094. [2022-11-18 20:31:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 3.271904300032331) internal successors, (10120), 3093 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 10120 transitions. [2022-11-18 20:31:50,788 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 10120 transitions. Word has length 24 [2022-11-18 20:31:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:50,789 INFO L495 AbstractCegarLoop]: Abstraction has 3094 states and 10120 transitions. [2022-11-18 20:31:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 10120 transitions. [2022-11-18 20:31:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:31:50,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:50,795 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:50,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-18 20:31:50,995 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash -791850388, now seen corresponding path program 60 times [2022-11-18 20:31:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:50,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558944055] [2022-11-18 20:31:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:51,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:51,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558944055] [2022-11-18 20:31:51,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558944055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:51,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009192984] [2022-11-18 20:31:51,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:31:51,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:51,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:51,361 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:51,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-18 20:31:51,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:31:51,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:51,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:31:51,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:31:51,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:52,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009192984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:52,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:52,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2022-11-18 20:31:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077081650] [2022-11-18 20:31:52,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:31:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:31:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:31:52,726 INFO L87 Difference]: Start difference. First operand 3094 states and 10120 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:55,050 INFO L93 Difference]: Finished difference Result 4044 states and 12319 transitions. [2022-11-18 20:31:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:31:55,051 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:31:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:55,059 INFO L225 Difference]: With dead ends: 4044 [2022-11-18 20:31:55,060 INFO L226 Difference]: Without dead ends: 4034 [2022-11-18 20:31:55,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=960, Invalid=3732, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 20:31:55,060 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 252 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:55,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 15 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:31:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2022-11-18 20:31:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 3050. [2022-11-18 20:31:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 3049 states have (on average 3.2738602820596916) internal successors, (9982), 3049 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 9982 transitions. [2022-11-18 20:31:55,125 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 9982 transitions. Word has length 24 [2022-11-18 20:31:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:55,125 INFO L495 AbstractCegarLoop]: Abstraction has 3050 states and 9982 transitions. [2022-11-18 20:31:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 9982 transitions. [2022-11-18 20:31:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:31:55,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:55,130 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:55,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-11-18 20:31:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-11-18 20:31:55,331 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1424036827, now seen corresponding path program 61 times [2022-11-18 20:31:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128253956] [2022-11-18 20:31:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:55,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128253956] [2022-11-18 20:31:55,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128253956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:55,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010750058] [2022-11-18 20:31:55,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:31:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:55,580 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-18 20:31:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:31:55,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:55,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:56,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010750058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:56,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:56,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 13] total 19 [2022-11-18 20:31:56,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622145354] [2022-11-18 20:31:56,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:56,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:31:56,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:31:56,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:31:56,292 INFO L87 Difference]: Start difference. First operand 3050 states and 9982 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:56,729 INFO L93 Difference]: Finished difference Result 4169 states and 13708 transitions. [2022-11-18 20:31:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:31:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:31:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:56,738 INFO L225 Difference]: With dead ends: 4169 [2022-11-18 20:31:56,738 INFO L226 Difference]: Without dead ends: 4130 [2022-11-18 20:31:56,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:31:56,738 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 207 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:56,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 70 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:31:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2022-11-18 20:31:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3996. [2022-11-18 20:31:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3996 states, 3995 states have (on average 3.3256570713391738) internal successors, (13286), 3995 states have internal predecessors, (13286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 13286 transitions. [2022-11-18 20:31:56,811 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 13286 transitions. Word has length 25 [2022-11-18 20:31:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:56,812 INFO L495 AbstractCegarLoop]: Abstraction has 3996 states and 13286 transitions. [2022-11-18 20:31:56,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 13286 transitions. [2022-11-18 20:31:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:31:56,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:56,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:56,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:57,027 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:31:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1292171803, now seen corresponding path program 62 times [2022-11-18 20:31:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923362424] [2022-11-18 20:31:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:57,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923362424] [2022-11-18 20:31:57,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923362424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312297299] [2022-11-18 20:31:57,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:31:57,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:57,387 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:57,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-18 20:31:57,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:31:57,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:57,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:31:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:57,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:59,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312297299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:59,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:59,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2022-11-18 20:31:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561846164] [2022-11-18 20:31:59,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:59,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:31:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:31:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:31:59,406 INFO L87 Difference]: Start difference. First operand 3996 states and 13286 transitions. Second operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:03,994 INFO L93 Difference]: Finished difference Result 4908 states and 15111 transitions. [2022-11-18 20:32:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 20:32:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:04,003 INFO L225 Difference]: With dead ends: 4908 [2022-11-18 20:32:04,003 INFO L226 Difference]: Without dead ends: 4902 [2022-11-18 20:32:04,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1841, Invalid=7089, Unknown=0, NotChecked=0, Total=8930 [2022-11-18 20:32:04,004 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 453 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:04,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 69 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:32:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2022-11-18 20:32:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4036. [2022-11-18 20:32:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4035 states have (on average 3.3353159851301117) internal successors, (13458), 4035 states have internal predecessors, (13458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 13458 transitions. [2022-11-18 20:32:04,082 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 13458 transitions. Word has length 25 [2022-11-18 20:32:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:04,082 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 13458 transitions. [2022-11-18 20:32:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 13458 transitions. [2022-11-18 20:32:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:04,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:04,090 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:04,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-18 20:32:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:04,290 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash -382762745, now seen corresponding path program 63 times [2022-11-18 20:32:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:04,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122649808] [2022-11-18 20:32:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:04,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122649808] [2022-11-18 20:32:04,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122649808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:04,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482427503] [2022-11-18 20:32:04,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:32:04,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:04,635 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:04,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-18 20:32:04,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:32:04,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:04,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:32:04,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:04,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:05,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482427503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:05,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:05,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-11-18 20:32:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183282211] [2022-11-18 20:32:05,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:32:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:32:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:32:05,155 INFO L87 Difference]: Start difference. First operand 4036 states and 13458 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:06,814 INFO L93 Difference]: Finished difference Result 5174 states and 16366 transitions. [2022-11-18 20:32:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:32:06,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:06,825 INFO L225 Difference]: With dead ends: 5174 [2022-11-18 20:32:06,825 INFO L226 Difference]: Without dead ends: 5170 [2022-11-18 20:32:06,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=514, Invalid=3268, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 20:32:06,825 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 300 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:06,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 65 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:32:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2022-11-18 20:32:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 4106. [2022-11-18 20:32:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 4105 states have (on average 3.336175395858709) internal successors, (13695), 4105 states have internal predecessors, (13695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 13695 transitions. [2022-11-18 20:32:06,911 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 13695 transitions. Word has length 25 [2022-11-18 20:32:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:06,911 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 13695 transitions. [2022-11-18 20:32:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 13695 transitions. [2022-11-18 20:32:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:06,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:06,918 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:06,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-11-18 20:32:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-18 20:32:07,119 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1354084841, now seen corresponding path program 64 times [2022-11-18 20:32:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933822944] [2022-11-18 20:32:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933822944] [2022-11-18 20:32:07,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933822944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489127021] [2022-11-18 20:32:07,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:32:07,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:07,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:07,511 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:07,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-18 20:32:07,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:32:07,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:07,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:32:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:07,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:09,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489127021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:09,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:09,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2022-11-18 20:32:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400513872] [2022-11-18 20:32:09,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:09,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:32:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:32:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1336, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:32:09,161 INFO L87 Difference]: Start difference. First operand 4106 states and 13695 transitions. Second operand has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:17,968 INFO L93 Difference]: Finished difference Result 7722 states and 23081 transitions. [2022-11-18 20:32:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-18 20:32:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:17,986 INFO L225 Difference]: With dead ends: 7722 [2022-11-18 20:32:17,986 INFO L226 Difference]: Without dead ends: 7682 [2022-11-18 20:32:17,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6990 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3565, Invalid=15895, Unknown=0, NotChecked=0, Total=19460 [2022-11-18 20:32:17,988 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 478 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 3132 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:17,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 43 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3132 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:32:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7682 states. [2022-11-18 20:32:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 4444. [2022-11-18 20:32:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 4443 states have (on average 3.3553905019131216) internal successors, (14908), 4443 states have internal predecessors, (14908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 14908 transitions. [2022-11-18 20:32:18,100 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 14908 transitions. Word has length 25 [2022-11-18 20:32:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:18,100 INFO L495 AbstractCegarLoop]: Abstraction has 4444 states and 14908 transitions. [2022-11-18 20:32:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 40 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 14908 transitions. [2022-11-18 20:32:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:18,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:18,108 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:18,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-18 20:32:18,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:18,324 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1484214407, now seen corresponding path program 65 times [2022-11-18 20:32:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279610622] [2022-11-18 20:32:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:18,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279610622] [2022-11-18 20:32:18,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279610622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364098366] [2022-11-18 20:32:18,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:32:18,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:18,708 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:18,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-18 20:32:18,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:32:18,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:32:18,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:19,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:19,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364098366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:19,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:19,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 40 [2022-11-18 20:32:19,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559066767] [2022-11-18 20:32:19,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:19,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:32:19,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:32:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:32:20,000 INFO L87 Difference]: Start difference. First operand 4444 states and 14908 transitions. Second operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:26,372 INFO L93 Difference]: Finished difference Result 8186 states and 24834 transitions. [2022-11-18 20:32:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-18 20:32:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:26,392 INFO L225 Difference]: With dead ends: 8186 [2022-11-18 20:32:26,392 INFO L226 Difference]: Without dead ends: 8122 [2022-11-18 20:32:26,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5267 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2754, Invalid=12008, Unknown=0, NotChecked=0, Total=14762 [2022-11-18 20:32:26,393 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 473 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:26,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 30 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:32:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2022-11-18 20:32:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 4708. [2022-11-18 20:32:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 3.3779477374123648) internal successors, (15900), 4707 states have internal predecessors, (15900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 15900 transitions. [2022-11-18 20:32:26,517 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 15900 transitions. Word has length 25 [2022-11-18 20:32:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:26,517 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 15900 transitions. [2022-11-18 20:32:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 15900 transitions. [2022-11-18 20:32:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:26,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:26,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:26,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-11-18 20:32:26,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:26,728 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 768305385, now seen corresponding path program 66 times [2022-11-18 20:32:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:26,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989404878] [2022-11-18 20:32:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:27,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989404878] [2022-11-18 20:32:27,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989404878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:27,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814865474] [2022-11-18 20:32:27,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:32:27,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:27,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:27,084 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:27,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-18 20:32:27,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:32:27,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:27,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:32:27,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:27,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:28,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814865474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:28,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:28,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 41 [2022-11-18 20:32:28,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397508206] [2022-11-18 20:32:28,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:28,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:32:28,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:32:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:32:28,229 INFO L87 Difference]: Start difference. First operand 4708 states and 15900 transitions. Second operand has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:32,322 INFO L93 Difference]: Finished difference Result 7838 states and 23510 transitions. [2022-11-18 20:32:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 20:32:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:32,341 INFO L225 Difference]: With dead ends: 7838 [2022-11-18 20:32:32,341 INFO L226 Difference]: Without dead ends: 7742 [2022-11-18 20:32:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2424, Invalid=9566, Unknown=0, NotChecked=0, Total=11990 [2022-11-18 20:32:32,342 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 412 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:32,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 21 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:32:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2022-11-18 20:32:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 4430. [2022-11-18 20:32:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4429 states have (on average 3.3680289004289907) internal successors, (14917), 4429 states have internal predecessors, (14917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 14917 transitions. [2022-11-18 20:32:32,454 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 14917 transitions. Word has length 25 [2022-11-18 20:32:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:32,455 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 14917 transitions. [2022-11-18 20:32:32,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 14917 transitions. [2022-11-18 20:32:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:32,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:32,462 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:32,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-18 20:32:32,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:32,663 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash 491099719, now seen corresponding path program 67 times [2022-11-18 20:32:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:32,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446073616] [2022-11-18 20:32:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:32,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446073616] [2022-11-18 20:32:33,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446073616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415001603] [2022-11-18 20:32:33,035 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:32:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:33,036 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-18 20:32:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:33,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:32:33,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:33,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:32:34,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415001603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:34,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:34,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 40 [2022-11-18 20:32:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575728900] [2022-11-18 20:32:34,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:34,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:32:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:32:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:32:34,113 INFO L87 Difference]: Start difference. First operand 4430 states and 14917 transitions. Second operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:37,437 INFO L93 Difference]: Finished difference Result 8272 states and 25534 transitions. [2022-11-18 20:32:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-18 20:32:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:37,458 INFO L225 Difference]: With dead ends: 8272 [2022-11-18 20:32:37,458 INFO L226 Difference]: Without dead ends: 8184 [2022-11-18 20:32:37,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4199 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2417, Invalid=9355, Unknown=0, NotChecked=0, Total=11772 [2022-11-18 20:32:37,459 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 407 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:37,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 18 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:32:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8184 states. [2022-11-18 20:32:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8184 to 4766. [2022-11-18 20:32:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4765 states have (on average 3.374816369359916) internal successors, (16081), 4765 states have internal predecessors, (16081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 16081 transitions. [2022-11-18 20:32:37,584 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 16081 transitions. Word has length 25 [2022-11-18 20:32:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:37,585 INFO L495 AbstractCegarLoop]: Abstraction has 4766 states and 16081 transitions. [2022-11-18 20:32:37,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 16081 transitions. [2022-11-18 20:32:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:37,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:37,592 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:37,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-11-18 20:32:37,793 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash -582195867, now seen corresponding path program 68 times [2022-11-18 20:32:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:37,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720335256] [2022-11-18 20:32:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:37,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:32:38,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:38,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720335256] [2022-11-18 20:32:38,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720335256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:38,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621308144] [2022-11-18 20:32:38,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:32:38,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:38,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:38,090 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:38,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-18 20:32:38,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:32:38,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:38,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:32:38,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:38,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:32:39,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621308144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:39,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:39,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 40 [2022-11-18 20:32:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635612728] [2022-11-18 20:32:39,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:32:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:32:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1386, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:32:39,163 INFO L87 Difference]: Start difference. First operand 4766 states and 16081 transitions. Second operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:41,532 INFO L93 Difference]: Finished difference Result 6968 states and 21549 transitions. [2022-11-18 20:32:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 20:32:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:41,549 INFO L225 Difference]: With dead ends: 6968 [2022-11-18 20:32:41,549 INFO L226 Difference]: Without dead ends: 6856 [2022-11-18 20:32:41,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3067 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1959, Invalid=7353, Unknown=0, NotChecked=0, Total=9312 [2022-11-18 20:32:41,550 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 433 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:41,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 20 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:32:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2022-11-18 20:32:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 4732. [2022-11-18 20:32:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 3.376030437539632) internal successors, (15972), 4731 states have internal predecessors, (15972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 15972 transitions. [2022-11-18 20:32:41,673 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 15972 transitions. Word has length 25 [2022-11-18 20:32:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 4732 states and 15972 transitions. [2022-11-18 20:32:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 15972 transitions. [2022-11-18 20:32:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:41,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:41,681 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:41,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-11-18 20:32:41,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:41,882 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1683812133, now seen corresponding path program 69 times [2022-11-18 20:32:41,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:41,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341964681] [2022-11-18 20:32:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:41,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341964681] [2022-11-18 20:32:42,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341964681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791506276] [2022-11-18 20:32:42,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:32:42,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:42,271 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:42,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-18 20:32:42,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:32:42,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:42,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:32:42,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:42,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:43,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791506276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:43,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:43,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 43 [2022-11-18 20:32:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994739473] [2022-11-18 20:32:43,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:32:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:32:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1563, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:32:43,697 INFO L87 Difference]: Start difference. First operand 4732 states and 15972 transitions. Second operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:45,841 INFO L93 Difference]: Finished difference Result 6414 states and 19838 transitions. [2022-11-18 20:32:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 20:32:45,842 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:45,856 INFO L225 Difference]: With dead ends: 6414 [2022-11-18 20:32:45,856 INFO L226 Difference]: Without dead ends: 6346 [2022-11-18 20:32:45,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2750 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1646, Invalid=6544, Unknown=0, NotChecked=0, Total=8190 [2022-11-18 20:32:45,857 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 323 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:45,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 17 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:32:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-11-18 20:32:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 4676. [2022-11-18 20:32:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4675 states have (on average 3.3779679144385026) internal successors, (15792), 4675 states have internal predecessors, (15792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 15792 transitions. [2022-11-18 20:32:45,960 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 15792 transitions. Word has length 25 [2022-11-18 20:32:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:45,960 INFO L495 AbstractCegarLoop]: Abstraction has 4676 states and 15792 transitions. [2022-11-18 20:32:45,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 15792 transitions. [2022-11-18 20:32:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:45,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:45,971 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:45,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:46,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-11-18 20:32:46,178 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1185275725, now seen corresponding path program 70 times [2022-11-18 20:32:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:46,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344716280] [2022-11-18 20:32:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:46,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344716280] [2022-11-18 20:32:46,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344716280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:46,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003610505] [2022-11-18 20:32:46,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:32:46,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:46,510 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:46,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-18 20:32:46,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:32:46,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:46,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:32:46,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:47,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:48,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003610505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:48,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:48,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 44 [2022-11-18 20:32:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439032238] [2022-11-18 20:32:48,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:48,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:32:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:32:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:32:48,067 INFO L87 Difference]: Start difference. First operand 4676 states and 15792 transitions. Second operand has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:51,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:51,236 INFO L93 Difference]: Finished difference Result 6511 states and 20006 transitions. [2022-11-18 20:32:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:32:51,237 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:51,252 INFO L225 Difference]: With dead ends: 6511 [2022-11-18 20:32:51,252 INFO L226 Difference]: Without dead ends: 6428 [2022-11-18 20:32:51,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1890, Invalid=6666, Unknown=0, NotChecked=0, Total=8556 [2022-11-18 20:32:51,253 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 381 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:51,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 17 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:32:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2022-11-18 20:32:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 4504. [2022-11-18 20:32:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 4503 states have (on average 3.370197646013769) internal successors, (15176), 4503 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 15176 transitions. [2022-11-18 20:32:51,368 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 15176 transitions. Word has length 25 [2022-11-18 20:32:51,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:51,369 INFO L495 AbstractCegarLoop]: Abstraction has 4504 states and 15176 transitions. [2022-11-18 20:32:51,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 15176 transitions. [2022-11-18 20:32:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:32:51,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:51,376 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:51,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-11-18 20:32:51,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:51,577 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1176536297, now seen corresponding path program 71 times [2022-11-18 20:32:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441231419] [2022-11-18 20:32:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:32:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:51,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441231419] [2022-11-18 20:32:51,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441231419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:51,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697105881] [2022-11-18 20:32:51,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:32:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:51,888 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:51,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-18 20:32:52,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:32:52,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:52,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:32:52,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:52,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697105881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:53,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:53,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 41 [2022-11-18 20:32:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055956287] [2022-11-18 20:32:53,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:32:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:32:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:32:53,534 INFO L87 Difference]: Start difference. First operand 4504 states and 15176 transitions. Second operand has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:56,306 INFO L93 Difference]: Finished difference Result 6022 states and 18640 transitions. [2022-11-18 20:32:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:32:56,307 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 20:32:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:56,318 INFO L225 Difference]: With dead ends: 6022 [2022-11-18 20:32:56,318 INFO L226 Difference]: Without dead ends: 6002 [2022-11-18 20:32:56,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1155, Invalid=4697, Unknown=0, NotChecked=0, Total=5852 [2022-11-18 20:32:56,319 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 324 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:56,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 15 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:32:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2022-11-18 20:32:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 4690. [2022-11-18 20:32:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 3.3744934954148005) internal successors, (15823), 4689 states have internal predecessors, (15823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 15823 transitions. [2022-11-18 20:32:56,409 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 15823 transitions. Word has length 25 [2022-11-18 20:32:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:56,409 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 15823 transitions. [2022-11-18 20:32:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 15823 transitions. [2022-11-18 20:32:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:32:56,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:56,418 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:56,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:56,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:56,624 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:32:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1169160776, now seen corresponding path program 72 times [2022-11-18 20:32:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:56,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918272430] [2022-11-18 20:32:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918272430] [2022-11-18 20:32:56,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918272430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164985998] [2022-11-18 20:32:56,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:32:56,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:56,928 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-18 20:32:57,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:32:57,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:32:57,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:32:57,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:57,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:32:57,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164985998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:57,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:57,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-11-18 20:32:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064612318] [2022-11-18 20:32:57,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:57,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:32:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:32:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:32:57,803 INFO L87 Difference]: Start difference. First operand 4690 states and 15823 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:04,697 INFO L93 Difference]: Finished difference Result 7533 states and 23600 transitions. [2022-11-18 20:33:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-18 20:33:04,698 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:33:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:04,714 INFO L225 Difference]: With dead ends: 7533 [2022-11-18 20:33:04,714 INFO L226 Difference]: Without dead ends: 7533 [2022-11-18 20:33:04,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7480 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5766, Invalid=19040, Unknown=0, NotChecked=0, Total=24806 [2022-11-18 20:33:04,716 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 736 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:04,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 65 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:33:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2022-11-18 20:33:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 4938. [2022-11-18 20:33:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4937 states have (on average 3.379380190399028) internal successors, (16684), 4937 states have internal predecessors, (16684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 16684 transitions. [2022-11-18 20:33:04,870 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 16684 transitions. Word has length 26 [2022-11-18 20:33:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:04,870 INFO L495 AbstractCegarLoop]: Abstraction has 4938 states and 16684 transitions. [2022-11-18 20:33:04,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 16684 transitions. [2022-11-18 20:33:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:33:04,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:04,878 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:04,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-11-18 20:33:05,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-11-18 20:33:05,079 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:33:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1319006948, now seen corresponding path program 73 times [2022-11-18 20:33:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:05,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822707587] [2022-11-18 20:33:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:05,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822707587] [2022-11-18 20:33:05,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822707587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:05,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371896459] [2022-11-18 20:33:05,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:33:05,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:05,519 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:05,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-18 20:33:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:05,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:33:05,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:05,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:06,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371896459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:06,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:06,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-11-18 20:33:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072670717] [2022-11-18 20:33:06,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:33:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:33:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:33:06,910 INFO L87 Difference]: Start difference. First operand 4938 states and 16684 transitions. Second operand has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:27,397 INFO L93 Difference]: Finished difference Result 9585 states and 30000 transitions. [2022-11-18 20:33:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-11-18 20:33:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:33:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:27,418 INFO L225 Difference]: With dead ends: 9585 [2022-11-18 20:33:27,418 INFO L226 Difference]: Without dead ends: 9557 [2022-11-18 20:33:27,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21350 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=14079, Invalid=39977, Unknown=0, NotChecked=0, Total=54056 [2022-11-18 20:33:27,421 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 898 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:27,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 36 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:33:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-11-18 20:33:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 5874. [2022-11-18 20:33:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 3.3543333900902437) internal successors, (19700), 5873 states have internal predecessors, (19700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 19700 transitions. [2022-11-18 20:33:27,555 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 19700 transitions. Word has length 26 [2022-11-18 20:33:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:27,555 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 19700 transitions. [2022-11-18 20:33:27,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 41 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 19700 transitions. [2022-11-18 20:33:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:33:27,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:27,564 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:27,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-11-18 20:33:27,771 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:33:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 509440268, now seen corresponding path program 74 times [2022-11-18 20:33:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:27,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114243981] [2022-11-18 20:33:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:28,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114243981] [2022-11-18 20:33:28,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114243981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:28,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917359372] [2022-11-18 20:33:28,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:33:28,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:28,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:28,060 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:28,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-18 20:33:28,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:33:28,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:28,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:33:28,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:28,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917359372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:29,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:29,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2022-11-18 20:33:29,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774169959] [2022-11-18 20:33:29,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:33:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:29,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:33:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:33:29,208 INFO L87 Difference]: Start difference. First operand 5874 states and 19700 transitions. Second operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:38,557 INFO L93 Difference]: Finished difference Result 11002 states and 33873 transitions. [2022-11-18 20:33:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-11-18 20:33:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:33:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:38,586 INFO L225 Difference]: With dead ends: 11002 [2022-11-18 20:33:38,586 INFO L226 Difference]: Without dead ends: 10890 [2022-11-18 20:33:38,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11788 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=10021, Invalid=23651, Unknown=0, NotChecked=0, Total=33672 [2022-11-18 20:33:38,588 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 877 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:38,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 42 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:33:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2022-11-18 20:33:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 4810. [2022-11-18 20:33:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 3.2996464961530463) internal successors, (15868), 4809 states have internal predecessors, (15868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 15868 transitions. [2022-11-18 20:33:38,749 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 15868 transitions. Word has length 26 [2022-11-18 20:33:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 4810 states and 15868 transitions. [2022-11-18 20:33:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 15868 transitions. [2022-11-18 20:33:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:33:38,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:38,758 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:38,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:38,963 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:33:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1542335736, now seen corresponding path program 75 times [2022-11-18 20:33:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:38,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084755534] [2022-11-18 20:33:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:39,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:39,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084755534] [2022-11-18 20:33:39,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084755534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:39,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657339838] [2022-11-18 20:33:39,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:33:39,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:39,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:39,305 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:39,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-18 20:33:39,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:33:39,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:39,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:33:39,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:39,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:40,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657339838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:40,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:40,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 43 [2022-11-18 20:33:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418378619] [2022-11-18 20:33:40,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:40,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:33:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:33:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1499, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:33:40,821 INFO L87 Difference]: Start difference. First operand 4810 states and 15868 transitions. Second operand has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 43 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:52,884 INFO L93 Difference]: Finished difference Result 10362 states and 32060 transitions. [2022-11-18 20:33:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-11-18 20:33:52,884 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 43 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:33:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:52,910 INFO L225 Difference]: With dead ends: 10362 [2022-11-18 20:33:52,910 INFO L226 Difference]: Without dead ends: 10135 [2022-11-18 20:33:52,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12643 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=8855, Invalid=27435, Unknown=0, NotChecked=0, Total=36290 [2022-11-18 20:33:52,912 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1081 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:52,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 29 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:33:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2022-11-18 20:33:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 4728. [2022-11-18 20:33:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 3.3008250475989) internal successors, (15603), 4727 states have internal predecessors, (15603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 15603 transitions. [2022-11-18 20:33:53,047 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 15603 transitions. Word has length 26 [2022-11-18 20:33:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:53,047 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 15603 transitions. [2022-11-18 20:33:53,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 43 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 15603 transitions. [2022-11-18 20:33:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:33:53,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:53,055 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:53,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-11-18 20:33:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:53,256 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:33:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2016447668, now seen corresponding path program 76 times [2022-11-18 20:33:53,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:53,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509805062] [2022-11-18 20:33:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:53,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509805062] [2022-11-18 20:33:53,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509805062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958312123] [2022-11-18 20:33:53,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:33:53,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:53,693 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:53,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-18 20:33:53,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:33:53,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:53,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:33:53,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:54,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:55,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958312123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:55,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:55,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 42 [2022-11-18 20:33:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969862846] [2022-11-18 20:33:55,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:33:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:33:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:33:55,299 INFO L87 Difference]: Start difference. First operand 4728 states and 15603 transitions. Second operand has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:08,936 INFO L93 Difference]: Finished difference Result 9959 states and 30388 transitions. [2022-11-18 20:34:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-11-18 20:34:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:08,963 INFO L225 Difference]: With dead ends: 9959 [2022-11-18 20:34:08,963 INFO L226 Difference]: Without dead ends: 9764 [2022-11-18 20:34:08,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16975 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=10098, Invalid=35058, Unknown=0, NotChecked=0, Total=45156 [2022-11-18 20:34:08,966 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 803 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:08,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 31 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:34:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9764 states. [2022-11-18 20:34:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9764 to 5028. [2022-11-18 20:34:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 3.3023672170280487) internal successors, (16601), 5027 states have internal predecessors, (16601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 16601 transitions. [2022-11-18 20:34:09,169 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 16601 transitions. Word has length 26 [2022-11-18 20:34:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:09,169 INFO L495 AbstractCegarLoop]: Abstraction has 5028 states and 16601 transitions. [2022-11-18 20:34:09,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 16601 transitions. [2022-11-18 20:34:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:09,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:09,178 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:09,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-11-18 20:34:09,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-11-18 20:34:09,379 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -478028046, now seen corresponding path program 77 times [2022-11-18 20:34:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276596637] [2022-11-18 20:34:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276596637] [2022-11-18 20:34:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276596637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739971144] [2022-11-18 20:34:09,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:34:09,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:09,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:09,714 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:09,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-18 20:34:09,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:34:09,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:09,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:34:09,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:11,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739971144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:11,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:11,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 44 [2022-11-18 20:34:11,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630690325] [2022-11-18 20:34:11,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:11,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:34:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:34:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1580, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:34:11,041 INFO L87 Difference]: Start difference. First operand 5028 states and 16601 transitions. Second operand has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:19,323 INFO L93 Difference]: Finished difference Result 11543 states and 35676 transitions. [2022-11-18 20:34:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-18 20:34:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:19,355 INFO L225 Difference]: With dead ends: 11543 [2022-11-18 20:34:19,355 INFO L226 Difference]: Without dead ends: 11307 [2022-11-18 20:34:19,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9205 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=6670, Invalid=20062, Unknown=0, NotChecked=0, Total=26732 [2022-11-18 20:34:19,357 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 793 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:19,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 27 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:34:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2022-11-18 20:34:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 4588. [2022-11-18 20:34:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 3.2851536952256377) internal successors, (15069), 4587 states have internal predecessors, (15069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 15069 transitions. [2022-11-18 20:34:19,559 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 15069 transitions. Word has length 26 [2022-11-18 20:34:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:19,559 INFO L495 AbstractCegarLoop]: Abstraction has 4588 states and 15069 transitions. [2022-11-18 20:34:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 15069 transitions. [2022-11-18 20:34:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:19,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:19,566 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:19,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-11-18 20:34:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:19,767 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2128452088, now seen corresponding path program 78 times [2022-11-18 20:34:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023205651] [2022-11-18 20:34:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:20,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:20,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023205651] [2022-11-18 20:34:20,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023205651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:20,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960962010] [2022-11-18 20:34:20,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:34:20,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:20,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:20,143 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:20,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-18 20:34:20,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:34:20,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:34:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:20,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:21,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960962010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:21,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:21,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 43 [2022-11-18 20:34:21,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548819595] [2022-11-18 20:34:21,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:21,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:34:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:34:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:34:21,412 INFO L87 Difference]: Start difference. First operand 4588 states and 15069 transitions. Second operand has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:26,953 INFO L93 Difference]: Finished difference Result 9337 states and 28481 transitions. [2022-11-18 20:34:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-18 20:34:26,953 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:26,975 INFO L225 Difference]: With dead ends: 9337 [2022-11-18 20:34:26,975 INFO L226 Difference]: Without dead ends: 9145 [2022-11-18 20:34:26,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7044 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5294, Invalid=14446, Unknown=0, NotChecked=0, Total=19740 [2022-11-18 20:34:26,977 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 701 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:26,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 17 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:34:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-11-18 20:34:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 4844. [2022-11-18 20:34:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4843 states have (on average 3.2638860210613254) internal successors, (15807), 4843 states have internal predecessors, (15807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 15807 transitions. [2022-11-18 20:34:27,111 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 15807 transitions. Word has length 26 [2022-11-18 20:34:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:27,111 INFO L495 AbstractCegarLoop]: Abstraction has 4844 states and 15807 transitions. [2022-11-18 20:34:27,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 15807 transitions. [2022-11-18 20:34:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:27,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:27,120 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:27,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-11-18 20:34:27,327 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:27,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:27,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2074119136, now seen corresponding path program 79 times [2022-11-18 20:34:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:27,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218950455] [2022-11-18 20:34:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:27,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:27,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218950455] [2022-11-18 20:34:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218950455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315268126] [2022-11-18 20:34:27,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:34:27,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:27,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:27,597 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:27,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-18 20:34:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:34:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:28,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315268126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:28,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:28,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 40 [2022-11-18 20:34:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122563159] [2022-11-18 20:34:28,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:34:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:34:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1276, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:34:28,587 INFO L87 Difference]: Start difference. First operand 4844 states and 15807 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:32,199 INFO L93 Difference]: Finished difference Result 6879 states and 20801 transitions. [2022-11-18 20:34:32,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-18 20:34:32,199 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:32,215 INFO L225 Difference]: With dead ends: 6879 [2022-11-18 20:34:32,215 INFO L226 Difference]: Without dead ends: 6771 [2022-11-18 20:34:32,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5904 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3834, Invalid=12168, Unknown=0, NotChecked=0, Total=16002 [2022-11-18 20:34:32,217 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 746 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:32,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 19 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:34:32,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2022-11-18 20:34:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 5132. [2022-11-18 20:34:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5131 states have (on average 3.2642759695965697) internal successors, (16749), 5131 states have internal predecessors, (16749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 16749 transitions. [2022-11-18 20:34:32,330 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 16749 transitions. Word has length 26 [2022-11-18 20:34:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 16749 transitions. [2022-11-18 20:34:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 16749 transitions. [2022-11-18 20:34:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:32,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:32,339 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:32,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:32,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:32,539 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1790444105, now seen corresponding path program 80 times [2022-11-18 20:34:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336575367] [2022-11-18 20:34:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:32,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:32,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336575367] [2022-11-18 20:34:32,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336575367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610202590] [2022-11-18 20:34:32,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:34:32,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:32,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:32,951 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-18 20:34:33,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:34:33,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:33,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:34:33,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:33,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:34,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610202590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:34,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:34,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 41 [2022-11-18 20:34:34,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896769849] [2022-11-18 20:34:34,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:34:34,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:34:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1396, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:34:34,656 INFO L87 Difference]: Start difference. First operand 5132 states and 16749 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:37,500 INFO L93 Difference]: Finished difference Result 7650 states and 23174 transitions. [2022-11-18 20:34:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:34:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:37,518 INFO L225 Difference]: With dead ends: 7650 [2022-11-18 20:34:37,518 INFO L226 Difference]: Without dead ends: 7598 [2022-11-18 20:34:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2510 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1303, Invalid=5837, Unknown=0, NotChecked=0, Total=7140 [2022-11-18 20:34:37,519 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 269 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 17 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:34:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2022-11-18 20:34:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 5320. [2022-11-18 20:34:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 3.266215454032713) internal successors, (17373), 5319 states have internal predecessors, (17373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 17373 transitions. [2022-11-18 20:34:37,665 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 17373 transitions. Word has length 26 [2022-11-18 20:34:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:37,665 INFO L495 AbstractCegarLoop]: Abstraction has 5320 states and 17373 transitions. [2022-11-18 20:34:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 17373 transitions. [2022-11-18 20:34:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:37,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:37,674 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:37,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:37,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:37,874 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1541901577, now seen corresponding path program 81 times [2022-11-18 20:34:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583849796] [2022-11-18 20:34:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:38,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:38,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583849796] [2022-11-18 20:34:38,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583849796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:38,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716916571] [2022-11-18 20:34:38,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:38,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:38,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:38,187 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:38,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-11-18 20:34:38,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:34:38,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:38,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:34:38,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:38,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:40,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716916571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:40,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:40,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 41 [2022-11-18 20:34:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154373381] [2022-11-18 20:34:40,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:40,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:34:40,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:34:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:34:40,072 INFO L87 Difference]: Start difference. First operand 5320 states and 17373 transitions. Second operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:43,362 INFO L93 Difference]: Finished difference Result 7820 states and 23564 transitions. [2022-11-18 20:34:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 20:34:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:43,381 INFO L225 Difference]: With dead ends: 7820 [2022-11-18 20:34:43,381 INFO L226 Difference]: Without dead ends: 7776 [2022-11-18 20:34:43,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1698, Invalid=6858, Unknown=0, NotChecked=0, Total=8556 [2022-11-18 20:34:43,382 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 460 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:43,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 15 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:34:43,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2022-11-18 20:34:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 5566. [2022-11-18 20:34:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5565 states have (on average 3.276909254267745) internal successors, (18236), 5565 states have internal predecessors, (18236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 18236 transitions. [2022-11-18 20:34:43,541 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 18236 transitions. Word has length 26 [2022-11-18 20:34:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:43,541 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 18236 transitions. [2022-11-18 20:34:43,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 18236 transitions. [2022-11-18 20:34:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:43,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:43,550 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:43,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-11-18 20:34:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-11-18 20:34:43,751 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1051267282, now seen corresponding path program 82 times [2022-11-18 20:34:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286462369] [2022-11-18 20:34:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:44,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286462369] [2022-11-18 20:34:44,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286462369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243212047] [2022-11-18 20:34:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:34:44,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:44,064 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:44,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-11-18 20:34:44,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:34:44,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:44,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:34:44,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:44,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:45,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243212047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:45,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:45,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 43 [2022-11-18 20:34:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985279856] [2022-11-18 20:34:45,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:34:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:34:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1533, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:34:45,415 INFO L87 Difference]: Start difference. First operand 5566 states and 18236 transitions. Second operand has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:53,546 INFO L93 Difference]: Finished difference Result 7726 states and 23280 transitions. [2022-11-18 20:34:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-11-18 20:34:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:34:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:53,564 INFO L225 Difference]: With dead ends: 7726 [2022-11-18 20:34:53,564 INFO L226 Difference]: Without dead ends: 7536 [2022-11-18 20:34:53,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11828 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6750, Invalid=25112, Unknown=0, NotChecked=0, Total=31862 [2022-11-18 20:34:53,567 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1034 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:53,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 21 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:34:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2022-11-18 20:34:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 5392. [2022-11-18 20:34:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.2663698757187904) internal successors, (17609), 5391 states have internal predecessors, (17609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 17609 transitions. [2022-11-18 20:34:53,688 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 17609 transitions. Word has length 26 [2022-11-18 20:34:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 5392 states and 17609 transitions. [2022-11-18 20:34:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 17609 transitions. [2022-11-18 20:34:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:34:53,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:53,697 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:53,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-11-18 20:34:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-11-18 20:34:53,897 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:34:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1858922269, now seen corresponding path program 83 times [2022-11-18 20:34:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:53,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305552207] [2022-11-18 20:34:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305552207] [2022-11-18 20:34:54,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305552207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216043221] [2022-11-18 20:34:54,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:34:54,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:54,351 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:54,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-18 20:34:54,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:34:54,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:34:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:54,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:56,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216043221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:56,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:56,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 42 [2022-11-18 20:34:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530782480] [2022-11-18 20:34:56,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:34:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:34:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1387, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:34:56,592 INFO L87 Difference]: Start difference. First operand 5392 states and 17609 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:00,186 INFO L93 Difference]: Finished difference Result 6664 states and 20542 transitions. [2022-11-18 20:35:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 20:35:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:35:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:00,203 INFO L225 Difference]: With dead ends: 6664 [2022-11-18 20:35:00,204 INFO L226 Difference]: Without dead ends: 6654 [2022-11-18 20:35:00,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1408, Invalid=5398, Unknown=0, NotChecked=0, Total=6806 [2022-11-18 20:35:00,204 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 315 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:00,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 11 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:35:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2022-11-18 20:35:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 5240. [2022-11-18 20:35:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5240 states, 5239 states have (on average 3.2557740026722657) internal successors, (17057), 5239 states have internal predecessors, (17057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5240 states to 5240 states and 17057 transitions. [2022-11-18 20:35:00,308 INFO L78 Accepts]: Start accepts. Automaton has 5240 states and 17057 transitions. Word has length 26 [2022-11-18 20:35:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:00,309 INFO L495 AbstractCegarLoop]: Abstraction has 5240 states and 17057 transitions. [2022-11-18 20:35:00,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 17057 transitions. [2022-11-18 20:35:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:35:00,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:00,316 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:00,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-11-18 20:35:00,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-11-18 20:35:00,517 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -779890642, now seen corresponding path program 84 times [2022-11-18 20:35:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:00,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197637641] [2022-11-18 20:35:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197637641] [2022-11-18 20:35:00,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197637641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624237761] [2022-11-18 20:35:00,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:35:00,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:00,950 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:00,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-18 20:35:01,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:35:01,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:01,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:35:01,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:01,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:02,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624237761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:02,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:02,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 15] total 45 [2022-11-18 20:35:02,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441504233] [2022-11-18 20:35:02,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:02,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:35:02,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:35:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:35:02,027 INFO L87 Difference]: Start difference. First operand 5240 states and 17057 transitions. Second operand has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:06,651 INFO L93 Difference]: Finished difference Result 6544 states and 20077 transitions. [2022-11-18 20:35:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-18 20:35:06,652 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:35:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:06,669 INFO L225 Difference]: With dead ends: 6544 [2022-11-18 20:35:06,669 INFO L226 Difference]: Without dead ends: 6404 [2022-11-18 20:35:06,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5870 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3811, Invalid=13219, Unknown=0, NotChecked=0, Total=17030 [2022-11-18 20:35:06,671 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 504 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:06,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 16 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:35:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2022-11-18 20:35:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 5132. [2022-11-18 20:35:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5131 states have (on average 3.2560904307152603) internal successors, (16707), 5131 states have internal predecessors, (16707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 16707 transitions. [2022-11-18 20:35:06,776 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 16707 transitions. Word has length 26 [2022-11-18 20:35:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:06,776 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 16707 transitions. [2022-11-18 20:35:06,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 16707 transitions. [2022-11-18 20:35:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:06,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:06,784 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:06,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-11-18 20:35:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:06,985 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1060607064, now seen corresponding path program 85 times [2022-11-18 20:35:06,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573445502] [2022-11-18 20:35:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:07,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573445502] [2022-11-18 20:35:07,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573445502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:07,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162651235] [2022-11-18 20:35:07,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:35:07,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:07,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:07,243 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:07,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-11-18 20:35:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:35:07,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:07,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:08,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162651235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:08,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:08,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 15] total 22 [2022-11-18 20:35:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826217091] [2022-11-18 20:35:08,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:35:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:35:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:35:08,137 INFO L87 Difference]: Start difference. First operand 5132 states and 16707 transitions. Second operand has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:08,748 INFO L93 Difference]: Finished difference Result 6547 states and 21433 transitions. [2022-11-18 20:35:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:08,765 INFO L225 Difference]: With dead ends: 6547 [2022-11-18 20:35:08,765 INFO L226 Difference]: Without dead ends: 6504 [2022-11-18 20:35:08,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:35:08,766 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 208 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:08,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 81 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:35:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2022-11-18 20:35:08,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6334. [2022-11-18 20:35:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 6333 states have (on average 3.3039633664929733) internal successors, (20924), 6333 states have internal predecessors, (20924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 20924 transitions. [2022-11-18 20:35:08,942 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 20924 transitions. Word has length 27 [2022-11-18 20:35:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 6334 states and 20924 transitions. [2022-11-18 20:35:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 20924 transitions. [2022-11-18 20:35:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:08,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:08,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:08,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-11-18 20:35:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:09,153 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 226876518, now seen corresponding path program 86 times [2022-11-18 20:35:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873480174] [2022-11-18 20:35:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873480174] [2022-11-18 20:35:09,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873480174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:09,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403094583] [2022-11-18 20:35:09,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:09,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:09,606 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:09,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-11-18 20:35:09,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:09,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:09,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:35:09,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:12,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403094583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:12,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:12,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-11-18 20:35:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996759059] [2022-11-18 20:35:12,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:12,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:35:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:35:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1488, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:35:12,480 INFO L87 Difference]: Start difference. First operand 6334 states and 20924 transitions. Second operand has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 43 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:19,069 INFO L93 Difference]: Finished difference Result 7552 states and 23457 transitions. [2022-11-18 20:35:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 20:35:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 43 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:19,087 INFO L225 Difference]: With dead ends: 7552 [2022-11-18 20:35:19,087 INFO L226 Difference]: Without dead ends: 7546 [2022-11-18 20:35:19,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3323 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2358, Invalid=9414, Unknown=0, NotChecked=0, Total=11772 [2022-11-18 20:35:19,088 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 518 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:19,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 88 Invalid, 3891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:35:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2022-11-18 20:35:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 6386. [2022-11-18 20:35:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6385 states have (on average 3.3115113547376662) internal successors, (21144), 6385 states have internal predecessors, (21144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 21144 transitions. [2022-11-18 20:35:19,232 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 21144 transitions. Word has length 27 [2022-11-18 20:35:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:19,232 INFO L495 AbstractCegarLoop]: Abstraction has 6386 states and 21144 transitions. [2022-11-18 20:35:19,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 43 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 21144 transitions. [2022-11-18 20:35:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:19,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:19,242 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:19,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:19,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:19,443 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1448058030, now seen corresponding path program 87 times [2022-11-18 20:35:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:19,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446678131] [2022-11-18 20:35:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:19,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446678131] [2022-11-18 20:35:19,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446678131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:19,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924403605] [2022-11-18 20:35:19,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:35:19,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:19,900 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:19,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-11-18 20:35:20,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:35:20,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:20,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:35:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924403605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:20,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:20,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 31 [2022-11-18 20:35:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631619004] [2022-11-18 20:35:20,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:35:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:35:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:35:20,539 INFO L87 Difference]: Start difference. First operand 6386 states and 21144 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:22,778 INFO L93 Difference]: Finished difference Result 8298 states and 26111 transitions. [2022-11-18 20:35:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:35:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:22,797 INFO L225 Difference]: With dead ends: 8298 [2022-11-18 20:35:22,797 INFO L226 Difference]: Without dead ends: 8294 [2022-11-18 20:35:22,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=638, Invalid=4474, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 20:35:22,798 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 446 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:22,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 88 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:35:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2022-11-18 20:35:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 6358. [2022-11-18 20:35:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 6357 states have (on average 3.3113103665250905) internal successors, (21050), 6357 states have internal predecessors, (21050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 21050 transitions. [2022-11-18 20:35:22,933 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 21050 transitions. Word has length 27 [2022-11-18 20:35:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:22,934 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 21050 transitions. [2022-11-18 20:35:22,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 21050 transitions. [2022-11-18 20:35:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:22,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:22,945 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:22,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-11-18 20:35:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:23,145 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1078336574, now seen corresponding path program 88 times [2022-11-18 20:35:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:23,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385051879] [2022-11-18 20:35:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:23,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:23,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385051879] [2022-11-18 20:35:23,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385051879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:23,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120729461] [2022-11-18 20:35:23,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:35:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:23,529 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:23,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-11-18 20:35:23,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:35:23,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:23,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:35:23,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:24,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:25,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120729461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:25,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:25,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-11-18 20:35:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508316492] [2022-11-18 20:35:25,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:35:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:35:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1686, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:35:25,767 INFO L87 Difference]: Start difference. First operand 6358 states and 21050 transitions. Second operand has 46 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:38,301 INFO L93 Difference]: Finished difference Result 12628 states and 38123 transitions. [2022-11-18 20:35:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-18 20:35:38,301 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:38,335 INFO L225 Difference]: With dead ends: 12628 [2022-11-18 20:35:38,336 INFO L226 Difference]: Without dead ends: 12584 [2022-11-18 20:35:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10356 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5050, Invalid=23006, Unknown=0, NotChecked=0, Total=28056 [2022-11-18 20:35:38,337 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 525 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4555 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 4735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 4555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 67 Invalid, 4735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 4555 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 20:35:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12584 states. [2022-11-18 20:35:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12584 to 5240. [2022-11-18 20:35:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5240 states, 5239 states have (on average 3.3149456003054016) internal successors, (17367), 5239 states have internal predecessors, (17367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5240 states to 5240 states and 17367 transitions. [2022-11-18 20:35:38,496 INFO L78 Accepts]: Start accepts. Automaton has 5240 states and 17367 transitions. Word has length 27 [2022-11-18 20:35:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:38,496 INFO L495 AbstractCegarLoop]: Abstraction has 5240 states and 17367 transitions. [2022-11-18 20:35:38,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5240 states and 17367 transitions. [2022-11-18 20:35:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:38,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:38,503 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:38,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-11-18 20:35:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-11-18 20:35:38,704 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash -85380078, now seen corresponding path program 89 times [2022-11-18 20:35:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:38,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44709858] [2022-11-18 20:35:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:39,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:39,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44709858] [2022-11-18 20:35:39,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44709858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:39,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560441834] [2022-11-18 20:35:39,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:35:39,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:39,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:39,126 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:39,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-11-18 20:35:39,271 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:35:39,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:39,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:35:39,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:39,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:41,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560441834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:41,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:41,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 45 [2022-11-18 20:35:41,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238840377] [2022-11-18 20:35:41,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:41,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:35:41,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:35:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1702, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:35:41,009 INFO L87 Difference]: Start difference. First operand 5240 states and 17367 transitions. Second operand has 46 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:51,230 INFO L93 Difference]: Finished difference Result 11580 states and 34438 transitions. [2022-11-18 20:35:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-18 20:35:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:51,259 INFO L225 Difference]: With dead ends: 11580 [2022-11-18 20:35:51,259 INFO L226 Difference]: Without dead ends: 11516 [2022-11-18 20:35:51,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9375 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4659, Invalid=20463, Unknown=0, NotChecked=0, Total=25122 [2022-11-18 20:35:51,261 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 596 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:51,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 43 Invalid, 4015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:35:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11516 states. [2022-11-18 20:35:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11516 to 5982. [2022-11-18 20:35:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.3496070891155325) internal successors, (20034), 5981 states have internal predecessors, (20034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20034 transitions. [2022-11-18 20:35:51,464 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20034 transitions. Word has length 27 [2022-11-18 20:35:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:51,464 INFO L495 AbstractCegarLoop]: Abstraction has 5982 states and 20034 transitions. [2022-11-18 20:35:51,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20034 transitions. [2022-11-18 20:35:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:51,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:51,474 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:51,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-11-18 20:35:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:51,675 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2039151102, now seen corresponding path program 90 times [2022-11-18 20:35:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:51,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715771967] [2022-11-18 20:35:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:52,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:52,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715771967] [2022-11-18 20:35:52,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715771967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:52,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560316236] [2022-11-18 20:35:52,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:35:52,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:52,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:52,053 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:52,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-18 20:35:52,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:35:52,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:52,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:35:52,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:52,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:53,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560316236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:53,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:53,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 47 [2022-11-18 20:35:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771336251] [2022-11-18 20:35:53,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:35:53,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:35:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1897, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:35:53,628 INFO L87 Difference]: Start difference. First operand 5982 states and 20034 transitions. Second operand has 48 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:59,281 INFO L93 Difference]: Finished difference Result 10232 states and 31414 transitions. [2022-11-18 20:35:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-18 20:35:59,282 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:35:59,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:59,306 INFO L225 Difference]: With dead ends: 10232 [2022-11-18 20:35:59,306 INFO L226 Difference]: Without dead ends: 10156 [2022-11-18 20:35:59,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4242 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2351, Invalid=10759, Unknown=0, NotChecked=0, Total=13110 [2022-11-18 20:35:59,308 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 435 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 29 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:35:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2022-11-18 20:35:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 6056. [2022-11-18 20:35:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6055 states have (on average 3.3623451692815856) internal successors, (20359), 6055 states have internal predecessors, (20359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 20359 transitions. [2022-11-18 20:35:59,458 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 20359 transitions. Word has length 27 [2022-11-18 20:35:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:59,459 INFO L495 AbstractCegarLoop]: Abstraction has 6056 states and 20359 transitions. [2022-11-18 20:35:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 20359 transitions. [2022-11-18 20:35:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:35:59,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:59,468 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:59,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:59,669 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:35:59,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 51905746, now seen corresponding path program 91 times [2022-11-18 20:35:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899479854] [2022-11-18 20:35:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:59,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:00,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:00,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899479854] [2022-11-18 20:36:00,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899479854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:00,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365202008] [2022-11-18 20:36:00,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:36:00,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:00,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:00,070 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:00,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-11-18 20:36:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:00,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:36:00,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:00,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:01,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365202008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:01,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:01,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-11-18 20:36:01,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759273769] [2022-11-18 20:36:01,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:01,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:36:01,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:36:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2063, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:36:01,691 INFO L87 Difference]: Start difference. First operand 6056 states and 20359 transitions. Second operand has 50 states, 50 states have (on average 1.42) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:10,148 INFO L93 Difference]: Finished difference Result 12284 states and 36849 transitions. [2022-11-18 20:36:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-18 20:36:10,148 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.42) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:10,179 INFO L225 Difference]: With dead ends: 12284 [2022-11-18 20:36:10,180 INFO L226 Difference]: Without dead ends: 12158 [2022-11-18 20:36:10,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8862 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=5295, Invalid=19511, Unknown=0, NotChecked=0, Total=24806 [2022-11-18 20:36:10,182 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 666 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:10,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 24 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:36:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12158 states. [2022-11-18 20:36:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12158 to 6086. [2022-11-18 20:36:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 3.3666392769104356) internal successors, (20486), 6085 states have internal predecessors, (20486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 20486 transitions. [2022-11-18 20:36:10,360 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 20486 transitions. Word has length 27 [2022-11-18 20:36:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:10,360 INFO L495 AbstractCegarLoop]: Abstraction has 6086 states and 20486 transitions. [2022-11-18 20:36:10,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.42) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 20486 transitions. [2022-11-18 20:36:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:10,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:10,371 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:10,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:10,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-11-18 20:36:10,572 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1030546096, now seen corresponding path program 92 times [2022-11-18 20:36:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:10,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998661942] [2022-11-18 20:36:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:10,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:10,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998661942] [2022-11-18 20:36:10,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998661942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110605449] [2022-11-18 20:36:10,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:36:10,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:10,940 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:10,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-11-18 20:36:11,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:36:11,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:11,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:36:11,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:11,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:12,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110605449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:12,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:12,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 18] total 46 [2022-11-18 20:36:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758740328] [2022-11-18 20:36:12,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:36:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:12,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:36:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:36:12,219 INFO L87 Difference]: Start difference. First operand 6086 states and 20486 transitions. Second operand has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 46 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:22,118 INFO L93 Difference]: Finished difference Result 14019 states and 41256 transitions. [2022-11-18 20:36:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-11-18 20:36:22,119 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 46 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:22,155 INFO L225 Difference]: With dead ends: 14019 [2022-11-18 20:36:22,155 INFO L226 Difference]: Without dead ends: 13870 [2022-11-18 20:36:22,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17211 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=9555, Invalid=31451, Unknown=0, NotChecked=0, Total=41006 [2022-11-18 20:36:22,158 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 808 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:22,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 15 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:36:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13870 states. [2022-11-18 20:36:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13870 to 6344. [2022-11-18 20:36:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6344 states, 6343 states have (on average 3.3648116033422673) internal successors, (21343), 6343 states have internal predecessors, (21343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 21343 transitions. [2022-11-18 20:36:22,354 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 21343 transitions. Word has length 27 [2022-11-18 20:36:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:22,354 INFO L495 AbstractCegarLoop]: Abstraction has 6344 states and 21343 transitions. [2022-11-18 20:36:22,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 46 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 21343 transitions. [2022-11-18 20:36:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:22,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:22,365 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:22,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:22,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-11-18 20:36:22,565 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:22,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1130301298, now seen corresponding path program 93 times [2022-11-18 20:36:22,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:22,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614041880] [2022-11-18 20:36:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:36:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:22,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614041880] [2022-11-18 20:36:22,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614041880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:22,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290066005] [2022-11-18 20:36:22,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:36:22,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:22,931 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:22,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-11-18 20:36:23,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:36:23,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:23,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:36:23,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:23,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:36:24,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290066005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:24,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:24,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 15] total 42 [2022-11-18 20:36:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484756875] [2022-11-18 20:36:24,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:24,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:36:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:36:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:36:24,079 INFO L87 Difference]: Start difference. First operand 6344 states and 21343 transitions. Second operand has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 42 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:27,355 INFO L93 Difference]: Finished difference Result 10113 states and 30597 transitions. [2022-11-18 20:36:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 20:36:27,356 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 42 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:27,397 INFO L225 Difference]: With dead ends: 10113 [2022-11-18 20:36:27,397 INFO L226 Difference]: Without dead ends: 10013 [2022-11-18 20:36:27,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5129 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3235, Invalid=11285, Unknown=0, NotChecked=0, Total=14520 [2022-11-18 20:36:27,400 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 570 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:27,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 19 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:36:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2022-11-18 20:36:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 6654. [2022-11-18 20:36:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6654 states, 6653 states have (on average 3.365399068089584) internal successors, (22390), 6653 states have internal predecessors, (22390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6654 states to 6654 states and 22390 transitions. [2022-11-18 20:36:27,553 INFO L78 Accepts]: Start accepts. Automaton has 6654 states and 22390 transitions. Word has length 27 [2022-11-18 20:36:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 6654 states and 22390 transitions. [2022-11-18 20:36:27,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 42 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6654 states and 22390 transitions. [2022-11-18 20:36:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:27,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:27,565 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:27,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-11-18 20:36:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-11-18 20:36:27,765 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 39279580, now seen corresponding path program 94 times [2022-11-18 20:36:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:27,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691680808] [2022-11-18 20:36:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:28,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691680808] [2022-11-18 20:36:28,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691680808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:28,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84480969] [2022-11-18 20:36:28,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:36:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:28,111 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:28,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-11-18 20:36:28,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:36:28,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:28,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:36:28,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:28,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:29,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84480969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:29,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:29,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 48 [2022-11-18 20:36:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191796114] [2022-11-18 20:36:29,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:36:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:36:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:36:29,359 INFO L87 Difference]: Start difference. First operand 6654 states and 22390 transitions. Second operand has 49 states, 49 states have (on average 1.469387755102041) internal successors, (72), 48 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:32,468 INFO L93 Difference]: Finished difference Result 9358 states and 28793 transitions. [2022-11-18 20:36:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-18 20:36:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.469387755102041) internal successors, (72), 48 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:32,491 INFO L225 Difference]: With dead ends: 9358 [2022-11-18 20:36:32,491 INFO L226 Difference]: Without dead ends: 9238 [2022-11-18 20:36:32,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4695 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3020, Invalid=10552, Unknown=0, NotChecked=0, Total=13572 [2022-11-18 20:36:32,493 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 487 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:32,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 17 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:36:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2022-11-18 20:36:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 6446. [2022-11-18 20:36:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6446 states, 6445 states have (on average 3.3579519006982155) internal successors, (21642), 6445 states have internal predecessors, (21642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 21642 transitions. [2022-11-18 20:36:32,626 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 21642 transitions. Word has length 27 [2022-11-18 20:36:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:32,626 INFO L495 AbstractCegarLoop]: Abstraction has 6446 states and 21642 transitions. [2022-11-18 20:36:32,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.469387755102041) internal successors, (72), 48 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 21642 transitions. [2022-11-18 20:36:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:32,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:32,636 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:32,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:32,836 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1718909724, now seen corresponding path program 95 times [2022-11-18 20:36:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:32,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226003079] [2022-11-18 20:36:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226003079] [2022-11-18 20:36:33,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226003079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471587412] [2022-11-18 20:36:33,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:36:33,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:33,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:33,193 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:33,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-11-18 20:36:33,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:36:33,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:33,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:36:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:33,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:34,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471587412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:34,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:34,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 44 [2022-11-18 20:36:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544213661] [2022-11-18 20:36:34,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:34,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:36:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:36:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:36:34,490 INFO L87 Difference]: Start difference. First operand 6446 states and 21642 transitions. Second operand has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:36,816 INFO L93 Difference]: Finished difference Result 9458 states and 29140 transitions. [2022-11-18 20:36:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-18 20:36:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:36,839 INFO L225 Difference]: With dead ends: 9458 [2022-11-18 20:36:36,839 INFO L226 Difference]: Without dead ends: 9346 [2022-11-18 20:36:36,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3394 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1909, Invalid=7597, Unknown=0, NotChecked=0, Total=9506 [2022-11-18 20:36:36,840 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 247 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:36,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 15 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:36:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2022-11-18 20:36:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 6610. [2022-11-18 20:36:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6610 states, 6609 states have (on average 3.3593584505976697) internal successors, (22202), 6609 states have internal predecessors, (22202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 22202 transitions. [2022-11-18 20:36:37,022 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 22202 transitions. Word has length 27 [2022-11-18 20:36:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:37,023 INFO L495 AbstractCegarLoop]: Abstraction has 6610 states and 22202 transitions. [2022-11-18 20:36:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 22202 transitions. [2022-11-18 20:36:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:37,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:37,033 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:37,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-11-18 20:36:37,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-11-18 20:36:37,234 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1045032370, now seen corresponding path program 96 times [2022-11-18 20:36:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:37,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103542017] [2022-11-18 20:36:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:37,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103542017] [2022-11-18 20:36:37,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103542017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850504350] [2022-11-18 20:36:37,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:36:37,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:37,551 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:37,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-11-18 20:36:37,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 20:36:37,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:37,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:36:37,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:38,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:38,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850504350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:38,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:38,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 46 [2022-11-18 20:36:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462370541] [2022-11-18 20:36:38,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:38,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:36:38,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:36:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:36:38,842 INFO L87 Difference]: Start difference. First operand 6610 states and 22202 transitions. Second operand has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:41,231 INFO L93 Difference]: Finished difference Result 9162 states and 28218 transitions. [2022-11-18 20:36:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:36:41,231 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:41,249 INFO L225 Difference]: With dead ends: 9162 [2022-11-18 20:36:41,250 INFO L226 Difference]: Without dead ends: 9086 [2022-11-18 20:36:41,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1990, Invalid=8110, Unknown=0, NotChecked=0, Total=10100 [2022-11-18 20:36:41,251 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 388 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:41,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 24 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:36:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9086 states. [2022-11-18 20:36:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9086 to 6744. [2022-11-18 20:36:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6743 states have (on average 3.360077117010233) internal successors, (22657), 6743 states have internal predecessors, (22657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 22657 transitions. [2022-11-18 20:36:41,416 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 22657 transitions. Word has length 27 [2022-11-18 20:36:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:41,416 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 22657 transitions. [2022-11-18 20:36:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 46 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 22657 transitions. [2022-11-18 20:36:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:41,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:41,427 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:41,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-11-18 20:36:41,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-11-18 20:36:41,627 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2062902450, now seen corresponding path program 97 times [2022-11-18 20:36:41,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:41,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719383212] [2022-11-18 20:36:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:42,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719383212] [2022-11-18 20:36:42,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719383212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:42,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238742652] [2022-11-18 20:36:42,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:36:42,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:42,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:42,043 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:42,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-11-18 20:36:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:42,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:36:42,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:42,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:43,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238742652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:43,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:43,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 49 [2022-11-18 20:36:43,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222670553] [2022-11-18 20:36:43,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:43,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:36:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:36:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=2008, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:36:43,666 INFO L87 Difference]: Start difference. First operand 6744 states and 22657 transitions. Second operand has 50 states, 50 states have (on average 1.44) internal successors, (72), 49 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:46,506 INFO L93 Difference]: Finished difference Result 9110 states and 28300 transitions. [2022-11-18 20:36:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 20:36:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.44) internal successors, (72), 49 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:46,528 INFO L225 Difference]: With dead ends: 9110 [2022-11-18 20:36:46,528 INFO L226 Difference]: Without dead ends: 9034 [2022-11-18 20:36:46,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3028 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1737, Invalid=7575, Unknown=0, NotChecked=0, Total=9312 [2022-11-18 20:36:46,529 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 371 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:46,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 20 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:36:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2022-11-18 20:36:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 6538. [2022-11-18 20:36:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6538 states, 6537 states have (on average 3.3556677374942634) internal successors, (21936), 6537 states have internal predecessors, (21936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 21936 transitions. [2022-11-18 20:36:46,659 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 21936 transitions. Word has length 27 [2022-11-18 20:36:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:46,660 INFO L495 AbstractCegarLoop]: Abstraction has 6538 states and 21936 transitions. [2022-11-18 20:36:46,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.44) internal successors, (72), 49 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 21936 transitions. [2022-11-18 20:36:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:46,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:46,670 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:46,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-11-18 20:36:46,873 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:46,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 95234332, now seen corresponding path program 98 times [2022-11-18 20:36:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:46,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732630652] [2022-11-18 20:36:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:47,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732630652] [2022-11-18 20:36:47,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732630652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:47,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278023680] [2022-11-18 20:36:47,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:36:47,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:47,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:47,288 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-11-18 20:36:47,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:36:47,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:47,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:36:47,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:47,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:36:49,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278023680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:49,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:49,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 48 [2022-11-18 20:36:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176088787] [2022-11-18 20:36:49,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:49,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:36:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:36:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1881, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:36:49,032 INFO L87 Difference]: Start difference. First operand 6538 states and 21936 transitions. Second operand has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:52,559 INFO L93 Difference]: Finished difference Result 8696 states and 27074 transitions. [2022-11-18 20:36:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:36:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:52,585 INFO L225 Difference]: With dead ends: 8696 [2022-11-18 20:36:52,585 INFO L226 Difference]: Without dead ends: 8656 [2022-11-18 20:36:52,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2113, Invalid=7987, Unknown=0, NotChecked=0, Total=10100 [2022-11-18 20:36:52,587 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 405 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:52,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 14 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:36:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2022-11-18 20:36:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 6342. [2022-11-18 20:36:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6342 states, 6341 states have (on average 3.3455290963570414) internal successors, (21214), 6341 states have internal predecessors, (21214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 21214 transitions. [2022-11-18 20:36:52,796 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 21214 transitions. Word has length 27 [2022-11-18 20:36:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:52,796 INFO L495 AbstractCegarLoop]: Abstraction has 6342 states and 21214 transitions. [2022-11-18 20:36:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 21214 transitions. [2022-11-18 20:36:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:36:52,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:52,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:52,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-11-18 20:36:53,019 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1033173042, now seen corresponding path program 99 times [2022-11-18 20:36:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:53,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965321650] [2022-11-18 20:36:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965321650] [2022-11-18 20:36:53,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965321650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456381382] [2022-11-18 20:36:53,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:36:53,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:53,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:53,439 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:53,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-11-18 20:36:53,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:36:53,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:36:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:53,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:36:55,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456381382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:55,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:55,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 46 [2022-11-18 20:36:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789768594] [2022-11-18 20:36:55,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:36:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:36:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=1653, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:36:55,641 INFO L87 Difference]: Start difference. First operand 6342 states and 21214 transitions. Second operand has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 46 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:58,880 INFO L93 Difference]: Finished difference Result 8304 states and 25832 transitions. [2022-11-18 20:36:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:36:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 46 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:36:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:58,899 INFO L225 Difference]: With dead ends: 8304 [2022-11-18 20:36:58,899 INFO L226 Difference]: Without dead ends: 8284 [2022-11-18 20:36:58,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1530, Invalid=6302, Unknown=0, NotChecked=0, Total=7832 [2022-11-18 20:36:58,900 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 400 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:58,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 9 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:36:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-11-18 20:36:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 6574. [2022-11-18 20:36:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 6573 states have (on average 3.3521983873421575) internal successors, (22034), 6573 states have internal predecessors, (22034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 22034 transitions. [2022-11-18 20:36:59,029 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 22034 transitions. Word has length 27 [2022-11-18 20:36:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 6574 states and 22034 transitions. [2022-11-18 20:36:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 46 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 22034 transitions. [2022-11-18 20:36:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:36:59,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:59,039 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:59,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:59,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-11-18 20:36:59,240 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:36:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 78742261, now seen corresponding path program 100 times [2022-11-18 20:36:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970744321] [2022-11-18 20:36:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970744321] [2022-11-18 20:36:59,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970744321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:59,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276639321] [2022-11-18 20:36:59,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:36:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:59,593 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:59,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-11-18 20:36:59,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:36:59,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:36:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:00,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:00,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276639321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:00,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:00,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2022-11-18 20:37:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423471652] [2022-11-18 20:37:00,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:37:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:37:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:37:00,790 INFO L87 Difference]: Start difference. First operand 6574 states and 22034 transitions. Second operand has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:09,038 INFO L93 Difference]: Finished difference Result 12288 states and 38288 transitions. [2022-11-18 20:37:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-11-18 20:37:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:37:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:09,067 INFO L225 Difference]: With dead ends: 12288 [2022-11-18 20:37:09,067 INFO L226 Difference]: Without dead ends: 12288 [2022-11-18 20:37:09,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 23 SyntacticMatches, 10 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9080 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6519, Invalid=22893, Unknown=0, NotChecked=0, Total=29412 [2022-11-18 20:37:09,069 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 672 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:09,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 56 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:37:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12288 states. [2022-11-18 20:37:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12288 to 6846. [2022-11-18 20:37:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6845 states have (on average 3.3570489408327244) internal successors, (22979), 6845 states have internal predecessors, (22979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 22979 transitions. [2022-11-18 20:37:09,244 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 22979 transitions. Word has length 28 [2022-11-18 20:37:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:09,244 INFO L495 AbstractCegarLoop]: Abstraction has 6846 states and 22979 transitions. [2022-11-18 20:37:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 22979 transitions. [2022-11-18 20:37:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:37:09,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:09,260 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:09,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:09,467 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:37:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1865044463, now seen corresponding path program 101 times [2022-11-18 20:37:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:09,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576514040] [2022-11-18 20:37:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:09,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576514040] [2022-11-18 20:37:09,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576514040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964505015] [2022-11-18 20:37:09,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:37:09,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:09,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:09,821 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-11-18 20:37:09,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:37:09,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:37:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:37:09,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:10,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:11,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964505015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:11,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:11,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-11-18 20:37:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773889171] [2022-11-18 20:37:11,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:37:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:37:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1583, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:37:11,196 INFO L87 Difference]: Start difference. First operand 6846 states and 22979 transitions. Second operand has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:30,727 INFO L93 Difference]: Finished difference Result 16576 states and 50026 transitions. [2022-11-18 20:37:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2022-11-18 20:37:30,727 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:37:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:30,758 INFO L225 Difference]: With dead ends: 16576 [2022-11-18 20:37:30,758 INFO L226 Difference]: Without dead ends: 16528 [2022-11-18 20:37:30,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 25 SyntacticMatches, 9 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81099 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=31123, Invalid=155069, Unknown=0, NotChecked=0, Total=186192 [2022-11-18 20:37:30,765 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1048 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:30,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 64 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:37:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16528 states. [2022-11-18 20:37:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16528 to 7672. [2022-11-18 20:37:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 7671 states have (on average 3.379481162821014) internal successors, (25924), 7671 states have internal predecessors, (25924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 25924 transitions. [2022-11-18 20:37:30,942 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 25924 transitions. Word has length 28 [2022-11-18 20:37:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:30,942 INFO L495 AbstractCegarLoop]: Abstraction has 7672 states and 25924 transitions. [2022-11-18 20:37:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 25924 transitions. [2022-11-18 20:37:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:37:30,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:30,953 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:30,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-11-18 20:37:31,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:31,153 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:37:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1376993455, now seen corresponding path program 102 times [2022-11-18 20:37:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:31,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347587177] [2022-11-18 20:37:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:37:31,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347587177] [2022-11-18 20:37:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347587177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971700834] [2022-11-18 20:37:31,462 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:37:31,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:31,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:31,463 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:31,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-11-18 20:37:31,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:37:31,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:37:31,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:37:31,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:31,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:37:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971700834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:32,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:32,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 45 [2022-11-18 20:37:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038998618] [2022-11-18 20:37:32,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:37:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:37:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=1572, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:37:32,783 INFO L87 Difference]: Start difference. First operand 7672 states and 25924 transitions. Second operand has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:45,987 INFO L93 Difference]: Finished difference Result 15884 states and 49065 transitions. [2022-11-18 20:37:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2022-11-18 20:37:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:37:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:46,024 INFO L225 Difference]: With dead ends: 15884 [2022-11-18 20:37:46,024 INFO L226 Difference]: Without dead ends: 15784 [2022-11-18 20:37:46,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24781 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=17827, Invalid=47453, Unknown=0, NotChecked=0, Total=65280 [2022-11-18 20:37:46,028 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 922 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:46,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 55 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:37:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15784 states. [2022-11-18 20:37:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15784 to 8244. [2022-11-18 20:37:46,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8244 states, 8243 states have (on average 3.37425694528691) internal successors, (27814), 8243 states have internal predecessors, (27814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 27814 transitions. [2022-11-18 20:37:46,219 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 27814 transitions. Word has length 28 [2022-11-18 20:37:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:46,219 INFO L495 AbstractCegarLoop]: Abstraction has 8244 states and 27814 transitions. [2022-11-18 20:37:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 27814 transitions. [2022-11-18 20:37:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:37:46,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:46,232 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:46,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-11-18 20:37:46,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-11-18 20:37:46,432 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:37:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1584074051, now seen corresponding path program 103 times [2022-11-18 20:37:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:46,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992699069] [2022-11-18 20:37:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:46,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992699069] [2022-11-18 20:37:46,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992699069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:46,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020359070] [2022-11-18 20:37:46,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:37:46,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:46,844 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:46,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-11-18 20:37:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:47,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:37:47,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:47,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020359070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:48,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:37:48,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 47 [2022-11-18 20:37:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328570940] [2022-11-18 20:37:48,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:48,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:37:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:37:48,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1758, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:37:48,213 INFO L87 Difference]: Start difference. First operand 8244 states and 27814 transitions. Second operand has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:00,668 INFO L93 Difference]: Finished difference Result 17306 states and 54401 transitions. [2022-11-18 20:38:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-11-18 20:38:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:00,708 INFO L225 Difference]: With dead ends: 17306 [2022-11-18 20:38:00,708 INFO L226 Difference]: Without dead ends: 17102 [2022-11-18 20:38:00,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19442 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=15156, Invalid=37514, Unknown=0, NotChecked=0, Total=52670 [2022-11-18 20:38:00,710 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1186 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:00,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 38 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:38:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17102 states. [2022-11-18 20:38:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17102 to 8142. [2022-11-18 20:38:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8142 states, 8141 states have (on average 3.3635916963517993) internal successors, (27383), 8141 states have internal predecessors, (27383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 27383 transitions. [2022-11-18 20:38:00,924 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 27383 transitions. Word has length 28 [2022-11-18 20:38:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:00,924 INFO L495 AbstractCegarLoop]: Abstraction has 8142 states and 27383 transitions. [2022-11-18 20:38:00,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 27383 transitions. [2022-11-18 20:38:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:00,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:00,935 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:00,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:01,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:01,136 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:01,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -795410763, now seen corresponding path program 104 times [2022-11-18 20:38:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:01,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063975445] [2022-11-18 20:38:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:01,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:01,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063975445] [2022-11-18 20:38:01,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063975445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:01,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560362894] [2022-11-18 20:38:01,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:38:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:01,529 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:01,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-11-18 20:38:01,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:38:01,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:38:01,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:38:01,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:02,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:02,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560362894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:02,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:02,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 49 [2022-11-18 20:38:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214136976] [2022-11-18 20:38:02,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:38:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:38:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:38:02,760 INFO L87 Difference]: Start difference. First operand 8142 states and 27383 transitions. Second operand has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:09,701 INFO L93 Difference]: Finished difference Result 18373 states and 58685 transitions. [2022-11-18 20:38:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-11-18 20:38:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:09,741 INFO L225 Difference]: With dead ends: 18373 [2022-11-18 20:38:09,742 INFO L226 Difference]: Without dead ends: 18209 [2022-11-18 20:38:09,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13595 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11672, Invalid=26940, Unknown=0, NotChecked=0, Total=38612 [2022-11-18 20:38:09,745 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 553 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:09,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 47 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:38:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18209 states. [2022-11-18 20:38:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18209 to 8244. [2022-11-18 20:38:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8244 states, 8243 states have (on average 3.3601843988839013) internal successors, (27698), 8243 states have internal predecessors, (27698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 27698 transitions. [2022-11-18 20:38:10,030 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 27698 transitions. Word has length 28 [2022-11-18 20:38:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:10,030 INFO L495 AbstractCegarLoop]: Abstraction has 8244 states and 27698 transitions. [2022-11-18 20:38:10,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 27698 transitions. [2022-11-18 20:38:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:10,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:10,043 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:10,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:10,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:10,247 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 865730849, now seen corresponding path program 105 times [2022-11-18 20:38:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:10,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175270009] [2022-11-18 20:38:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:10,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175270009] [2022-11-18 20:38:10,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175270009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:10,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617232493] [2022-11-18 20:38:10,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:38:10,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:10,575 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:10,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-11-18 20:38:10,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:38:10,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:38:10,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:38:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:11,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:11,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617232493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:11,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:11,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 48 [2022-11-18 20:38:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705693819] [2022-11-18 20:38:11,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:38:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:38:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1893, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:38:11,857 INFO L87 Difference]: Start difference. First operand 8244 states and 27698 transitions. Second operand has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:26,405 INFO L93 Difference]: Finished difference Result 24393 states and 77280 transitions. [2022-11-18 20:38:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-11-18 20:38:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:26,471 INFO L225 Difference]: With dead ends: 24393 [2022-11-18 20:38:26,471 INFO L226 Difference]: Without dead ends: 24121 [2022-11-18 20:38:26,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25081 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=17267, Invalid=49555, Unknown=0, NotChecked=0, Total=66822 [2022-11-18 20:38:26,475 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1054 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:26,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 32 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:38:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24121 states. [2022-11-18 20:38:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24121 to 9510. [2022-11-18 20:38:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9510 states, 9509 states have (on average 3.362814176043748) internal successors, (31977), 9509 states have internal predecessors, (31977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 31977 transitions. [2022-11-18 20:38:26,772 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 31977 transitions. Word has length 28 [2022-11-18 20:38:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:26,772 INFO L495 AbstractCegarLoop]: Abstraction has 9510 states and 31977 transitions. [2022-11-18 20:38:26,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 31977 transitions. [2022-11-18 20:38:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:26,785 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:26,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-11-18 20:38:26,986 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash -331152779, now seen corresponding path program 106 times [2022-11-18 20:38:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:26,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287218744] [2022-11-18 20:38:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:27,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287218744] [2022-11-18 20:38:27,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287218744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:27,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056472494] [2022-11-18 20:38:27,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:38:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:27,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:27,356 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:27,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-11-18 20:38:27,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:38:27,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:38:27,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:38:27,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:28,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:28,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056472494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:28,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:28,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 46 [2022-11-18 20:38:28,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589908568] [2022-11-18 20:38:28,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:28,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:38:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:38:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1758, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:38:28,745 INFO L87 Difference]: Start difference. First operand 9510 states and 31977 transitions. Second operand has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:37,250 INFO L93 Difference]: Finished difference Result 15192 states and 47622 transitions. [2022-11-18 20:38:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-11-18 20:38:37,250 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:37,282 INFO L225 Difference]: With dead ends: 15192 [2022-11-18 20:38:37,282 INFO L226 Difference]: Without dead ends: 14898 [2022-11-18 20:38:37,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11603 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8276, Invalid=23944, Unknown=0, NotChecked=0, Total=32220 [2022-11-18 20:38:37,284 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 837 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:37,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 33 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:38:37,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2022-11-18 20:38:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 7910. [2022-11-18 20:38:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7910 states, 7909 states have (on average 3.3388544695916047) internal successors, (26407), 7909 states have internal predecessors, (26407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 26407 transitions. [2022-11-18 20:38:37,457 INFO L78 Accepts]: Start accepts. Automaton has 7910 states and 26407 transitions. Word has length 28 [2022-11-18 20:38:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:37,457 INFO L495 AbstractCegarLoop]: Abstraction has 7910 states and 26407 transitions. [2022-11-18 20:38:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states and 26407 transitions. [2022-11-18 20:38:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:37,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:37,467 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:37,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-11-18 20:38:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-11-18 20:38:37,668 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1672751131, now seen corresponding path program 107 times [2022-11-18 20:38:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:37,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810894151] [2022-11-18 20:38:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:37,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:37,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810894151] [2022-11-18 20:38:37,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810894151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:37,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515519420] [2022-11-18 20:38:37,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:38:37,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:37,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:37,963 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:37,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-11-18 20:38:38,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:38:38,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:38:38,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:38:38,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:38,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:39,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515519420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:39,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:39,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 49 [2022-11-18 20:38:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243319503] [2022-11-18 20:38:39,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:39,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:38:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:38:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=1907, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:38:39,080 INFO L87 Difference]: Start difference. First operand 7910 states and 26407 transitions. Second operand has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:49,532 INFO L93 Difference]: Finished difference Result 16409 states and 50209 transitions. [2022-11-18 20:38:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-18 20:38:49,533 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:49,567 INFO L225 Difference]: With dead ends: 16409 [2022-11-18 20:38:49,567 INFO L226 Difference]: Without dead ends: 16229 [2022-11-18 20:38:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21256 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=13592, Invalid=39538, Unknown=0, NotChecked=0, Total=53130 [2022-11-18 20:38:49,569 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1073 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:49,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 22 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:38:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16229 states. [2022-11-18 20:38:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16229 to 8944. [2022-11-18 20:38:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8944 states, 8943 states have (on average 3.3328860561332885) internal successors, (29806), 8943 states have internal predecessors, (29806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8944 states to 8944 states and 29806 transitions. [2022-11-18 20:38:49,762 INFO L78 Accepts]: Start accepts. Automaton has 8944 states and 29806 transitions. Word has length 28 [2022-11-18 20:38:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:49,762 INFO L495 AbstractCegarLoop]: Abstraction has 8944 states and 29806 transitions. [2022-11-18 20:38:49,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8944 states and 29806 transitions. [2022-11-18 20:38:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:49,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:49,774 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:49,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:49,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:49,974 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:49,975 INFO L85 PathProgramCache]: Analyzing trace with hash 298078305, now seen corresponding path program 108 times [2022-11-18 20:38:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:49,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868286404] [2022-11-18 20:38:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:50,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868286404] [2022-11-18 20:38:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868286404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532875007] [2022-11-18 20:38:50,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:38:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:50,298 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:50,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-11-18 20:38:50,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 20:38:50,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:38:50,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:38:50,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:50,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:51,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532875007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:51,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:51,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 49 [2022-11-18 20:38:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148442140] [2022-11-18 20:38:51,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:51,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:38:51,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:38:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1920, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:38:51,428 INFO L87 Difference]: Start difference. First operand 8944 states and 29806 transitions. Second operand has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:57,626 INFO L93 Difference]: Finished difference Result 15804 states and 49697 transitions. [2022-11-18 20:38:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-18 20:38:57,626 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:38:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:57,662 INFO L225 Difference]: With dead ends: 15804 [2022-11-18 20:38:57,662 INFO L226 Difference]: Without dead ends: 15632 [2022-11-18 20:38:57,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11689 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8720, Invalid=22432, Unknown=0, NotChecked=0, Total=31152 [2022-11-18 20:38:57,665 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 791 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:57,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 21 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:38:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15632 states. [2022-11-18 20:38:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15632 to 8960. [2022-11-18 20:38:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8960 states, 8959 states have (on average 3.322692264761692) internal successors, (29768), 8959 states have internal predecessors, (29768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8960 states to 8960 states and 29768 transitions. [2022-11-18 20:38:57,910 INFO L78 Accepts]: Start accepts. Automaton has 8960 states and 29768 transitions. Word has length 28 [2022-11-18 20:38:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 8960 states and 29768 transitions. [2022-11-18 20:38:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:38:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8960 states and 29768 transitions. [2022-11-18 20:38:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:38:57,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:57,923 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:57,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-11-18 20:38:58,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-11-18 20:38:58,124 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:38:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -191809765, now seen corresponding path program 109 times [2022-11-18 20:38:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:58,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059186496] [2022-11-18 20:38:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:58,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059186496] [2022-11-18 20:38:58,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059186496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:58,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138421372] [2022-11-18 20:38:58,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:38:58,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:58,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:58,483 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:58,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-11-18 20:38:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:38:58,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:58,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:38:59,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138421372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:59,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:59,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 49 [2022-11-18 20:38:59,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100160533] [2022-11-18 20:38:59,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:38:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:38:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1912, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:38:59,723 INFO L87 Difference]: Start difference. First operand 8960 states and 29768 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:04,477 INFO L93 Difference]: Finished difference Result 15455 states and 49236 transitions. [2022-11-18 20:39:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-18 20:39:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:04,510 INFO L225 Difference]: With dead ends: 15455 [2022-11-18 20:39:04,510 INFO L226 Difference]: Without dead ends: 15319 [2022-11-18 20:39:04,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5084, Invalid=14098, Unknown=0, NotChecked=0, Total=19182 [2022-11-18 20:39:04,511 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 470 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:04,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 22 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:39:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15319 states. [2022-11-18 20:39:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15319 to 9366. [2022-11-18 20:39:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 9365 states have (on average 3.3173518419647623) internal successors, (31067), 9365 states have internal predecessors, (31067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 31067 transitions. [2022-11-18 20:39:04,705 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 31067 transitions. Word has length 28 [2022-11-18 20:39:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:04,706 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 31067 transitions. [2022-11-18 20:39:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 31067 transitions. [2022-11-18 20:39:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:04,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:04,719 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:04,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-11-18 20:39:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:04,919 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1482829345, now seen corresponding path program 110 times [2022-11-18 20:39:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:04,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393797711] [2022-11-18 20:39:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:39:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393797711] [2022-11-18 20:39:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393797711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848851443] [2022-11-18 20:39:05,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:05,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:05,226 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:05,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-11-18 20:39:05,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:39:05,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:05,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:39:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 25 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:05,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:39:06,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848851443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:06,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:06,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 16] total 48 [2022-11-18 20:39:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147870820] [2022-11-18 20:39:06,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:06,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:39:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:39:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1849, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:39:06,304 INFO L87 Difference]: Start difference. First operand 9366 states and 31067 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:13,132 INFO L93 Difference]: Finished difference Result 15887 states and 49664 transitions. [2022-11-18 20:39:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-18 20:39:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:13,168 INFO L225 Difference]: With dead ends: 15887 [2022-11-18 20:39:13,168 INFO L226 Difference]: Without dead ends: 15653 [2022-11-18 20:39:13,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10245 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=7181, Invalid=20875, Unknown=0, NotChecked=0, Total=28056 [2022-11-18 20:39:13,170 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 983 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:13,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 23 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:39:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15653 states. [2022-11-18 20:39:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15653 to 9670. [2022-11-18 20:39:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9670 states, 9669 states have (on average 3.3034439962767608) internal successors, (31941), 9669 states have internal predecessors, (31941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 31941 transitions. [2022-11-18 20:39:13,426 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 31941 transitions. Word has length 28 [2022-11-18 20:39:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:13,426 INFO L495 AbstractCegarLoop]: Abstraction has 9670 states and 31941 transitions. [2022-11-18 20:39:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 31941 transitions. [2022-11-18 20:39:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:13,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:13,487 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:13,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-11-18 20:39:13,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:13,687 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2100008515, now seen corresponding path program 111 times [2022-11-18 20:39:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:13,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073179625] [2022-11-18 20:39:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:13,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073179625] [2022-11-18 20:39:14,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073179625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:14,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582378477] [2022-11-18 20:39:14,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:39:14,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:14,058 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:14,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-11-18 20:39:14,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:39:14,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:39:14,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:14,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:39:15,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582378477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:15,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:15,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 17] total 50 [2022-11-18 20:39:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256629155] [2022-11-18 20:39:15,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:15,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:39:15,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:15,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:39:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1998, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:39:15,087 INFO L87 Difference]: Start difference. First operand 9670 states and 31941 transitions. Second operand has 50 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:20,259 INFO L93 Difference]: Finished difference Result 14317 states and 45449 transitions. [2022-11-18 20:39:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-18 20:39:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:20,288 INFO L225 Difference]: With dead ends: 14317 [2022-11-18 20:39:20,288 INFO L226 Difference]: Without dead ends: 14181 [2022-11-18 20:39:20,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7834 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5363, Invalid=16099, Unknown=0, NotChecked=0, Total=21462 [2022-11-18 20:39:20,289 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 564 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:20,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 21 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:39:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-11-18 20:39:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 9740. [2022-11-18 20:39:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9740 states, 9739 states have (on average 3.3050621213676967) internal successors, (32188), 9739 states have internal predecessors, (32188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9740 states to 9740 states and 32188 transitions. [2022-11-18 20:39:20,476 INFO L78 Accepts]: Start accepts. Automaton has 9740 states and 32188 transitions. Word has length 28 [2022-11-18 20:39:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:20,476 INFO L495 AbstractCegarLoop]: Abstraction has 9740 states and 32188 transitions. [2022-11-18 20:39:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9740 states and 32188 transitions. [2022-11-18 20:39:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:20,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:20,490 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:20,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:20,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-11-18 20:39:20,691 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash 131931163, now seen corresponding path program 112 times [2022-11-18 20:39:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675882911] [2022-11-18 20:39:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675882911] [2022-11-18 20:39:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675882911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644167721] [2022-11-18 20:39:21,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:39:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:21,032 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:21,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-11-18 20:39:21,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:39:21,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:21,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:39:21,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:21,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644167721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:22,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 51 [2022-11-18 20:39:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813815826] [2022-11-18 20:39:22,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:39:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:39:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2125, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:39:22,297 INFO L87 Difference]: Start difference. First operand 9740 states and 32188 transitions. Second operand has 51 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:34,375 INFO L93 Difference]: Finished difference Result 14897 states and 46343 transitions. [2022-11-18 20:39:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-11-18 20:39:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:34,403 INFO L225 Difference]: With dead ends: 14897 [2022-11-18 20:39:34,403 INFO L226 Difference]: Without dead ends: 14510 [2022-11-18 20:39:34,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20355 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=11614, Invalid=42442, Unknown=0, NotChecked=0, Total=54056 [2022-11-18 20:39:34,405 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 843 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:34,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 16 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:39:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14510 states. [2022-11-18 20:39:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14510 to 9816. [2022-11-18 20:39:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9816 states, 9815 states have (on average 3.3029037187977583) internal successors, (32418), 9815 states have internal predecessors, (32418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9816 states to 9816 states and 32418 transitions. [2022-11-18 20:39:34,578 INFO L78 Accepts]: Start accepts. Automaton has 9816 states and 32418 transitions. Word has length 28 [2022-11-18 20:39:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 9816 states and 32418 transitions. [2022-11-18 20:39:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9816 states and 32418 transitions. [2022-11-18 20:39:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:34,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:34,590 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:34,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-11-18 20:39:34,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-11-18 20:39:34,791 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -312571113, now seen corresponding path program 113 times [2022-11-18 20:39:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068870272] [2022-11-18 20:39:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:34,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:35,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068870272] [2022-11-18 20:39:35,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068870272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:35,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100549638] [2022-11-18 20:39:35,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:39:35,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:35,110 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:35,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-11-18 20:39:35,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 20:39:35,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:35,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:39:35,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:35,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:39:36,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100549638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:36,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:36,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 16] total 49 [2022-11-18 20:39:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59012392] [2022-11-18 20:39:36,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:39:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:39:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=1962, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:39:36,135 INFO L87 Difference]: Start difference. First operand 9816 states and 32418 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:41,572 INFO L93 Difference]: Finished difference Result 11806 states and 37060 transitions. [2022-11-18 20:39:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-18 20:39:41,572 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:41,596 INFO L225 Difference]: With dead ends: 11806 [2022-11-18 20:39:41,596 INFO L226 Difference]: Without dead ends: 11578 [2022-11-18 20:39:41,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11331 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7320, Invalid=23480, Unknown=0, NotChecked=0, Total=30800 [2022-11-18 20:39:41,598 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1170 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:41,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 12 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:39:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2022-11-18 20:39:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 9940. [2022-11-18 20:39:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9940 states, 9939 states have (on average 3.302143072743737) internal successors, (32820), 9939 states have internal predecessors, (32820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 32820 transitions. [2022-11-18 20:39:41,766 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 32820 transitions. Word has length 28 [2022-11-18 20:39:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:41,766 INFO L495 AbstractCegarLoop]: Abstraction has 9940 states and 32820 transitions. [2022-11-18 20:39:41,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 32820 transitions. [2022-11-18 20:39:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:41,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:41,778 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:41,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-11-18 20:39:41,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:41,979 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -991618258, now seen corresponding path program 114 times [2022-11-18 20:39:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:41,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803156464] [2022-11-18 20:39:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:42,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803156464] [2022-11-18 20:39:42,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803156464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:42,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822200029] [2022-11-18 20:39:42,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:39:42,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:42,291 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:42,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-11-18 20:39:42,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 20:39:42,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:42,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:39:42,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:43,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:44,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822200029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:44,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:44,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 19] total 47 [2022-11-18 20:39:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401849195] [2022-11-18 20:39:44,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:44,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:39:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:39:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:39:44,031 INFO L87 Difference]: Start difference. First operand 9940 states and 32820 transitions. Second operand has 48 states, 48 states have (on average 1.5) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:47,738 INFO L93 Difference]: Finished difference Result 14183 states and 42995 transitions. [2022-11-18 20:39:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-18 20:39:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:47,769 INFO L225 Difference]: With dead ends: 14183 [2022-11-18 20:39:47,769 INFO L226 Difference]: Without dead ends: 14096 [2022-11-18 20:39:47,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4291 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2417, Invalid=10015, Unknown=0, NotChecked=0, Total=12432 [2022-11-18 20:39:47,770 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 332 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:47,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 24 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:39:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14096 states. [2022-11-18 20:39:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14096 to 9910. [2022-11-18 20:39:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9909 states have (on average 3.299525683721869) internal successors, (32695), 9909 states have internal predecessors, (32695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 32695 transitions. [2022-11-18 20:39:48,017 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 32695 transitions. Word has length 28 [2022-11-18 20:39:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:48,017 INFO L495 AbstractCegarLoop]: Abstraction has 9910 states and 32695 transitions. [2022-11-18 20:39:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 32695 transitions. [2022-11-18 20:39:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:48,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:48,031 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:48,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:48,234 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 10480032, now seen corresponding path program 115 times [2022-11-18 20:39:48,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:48,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462714609] [2022-11-18 20:39:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:48,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462714609] [2022-11-18 20:39:48,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462714609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:48,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110495565] [2022-11-18 20:39:48,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:39:48,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:48,625 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:48,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-11-18 20:39:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:48,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:39:48,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:49,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:50,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110495565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:50,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:50,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 19] total 47 [2022-11-18 20:39:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730439242] [2022-11-18 20:39:50,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:39:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:39:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1797, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:39:50,487 INFO L87 Difference]: Start difference. First operand 9910 states and 32695 transitions. Second operand has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:53,716 INFO L93 Difference]: Finished difference Result 12258 states and 38460 transitions. [2022-11-18 20:39:53,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 20:39:53,717 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:39:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:53,742 INFO L225 Difference]: With dead ends: 12258 [2022-11-18 20:39:53,742 INFO L226 Difference]: Without dead ends: 12198 [2022-11-18 20:39:53,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3423 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2048, Invalid=7852, Unknown=0, NotChecked=0, Total=9900 [2022-11-18 20:39:53,743 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 284 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:53,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 19 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:39:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12198 states. [2022-11-18 20:39:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12198 to 10072. [2022-11-18 20:39:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10072 states, 10071 states have (on average 3.300565981531129) internal successors, (33240), 10071 states have internal predecessors, (33240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10072 states to 10072 states and 33240 transitions. [2022-11-18 20:39:53,913 INFO L78 Accepts]: Start accepts. Automaton has 10072 states and 33240 transitions. Word has length 28 [2022-11-18 20:39:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:53,914 INFO L495 AbstractCegarLoop]: Abstraction has 10072 states and 33240 transitions. [2022-11-18 20:39:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10072 states and 33240 transitions. [2022-11-18 20:39:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:39:53,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:53,927 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:53,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-11-18 20:39:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:54,127 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:39:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash -878124242, now seen corresponding path program 116 times [2022-11-18 20:39:54,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:54,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633852158] [2022-11-18 20:39:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633852158] [2022-11-18 20:39:54,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633852158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:54,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769264539] [2022-11-18 20:39:54,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:54,426 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:54,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-11-18 20:39:54,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:39:54,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:54,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:39:54,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:54,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:56,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769264539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:56,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:56,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 19] total 45 [2022-11-18 20:39:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192283751] [2022-11-18 20:39:56,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:39:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:39:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1601, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:39:56,677 INFO L87 Difference]: Start difference. First operand 10072 states and 33240 transitions. Second operand has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:00,333 INFO L93 Difference]: Finished difference Result 13760 states and 42440 transitions. [2022-11-18 20:40:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-18 20:40:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:40:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:00,360 INFO L225 Difference]: With dead ends: 13760 [2022-11-18 20:40:00,360 INFO L226 Difference]: Without dead ends: 13716 [2022-11-18 20:40:00,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2010, Invalid=7496, Unknown=0, NotChecked=0, Total=9506 [2022-11-18 20:40:00,361 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 378 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:00,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 15 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:40:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2022-11-18 20:40:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 10396. [2022-11-18 20:40:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10396 states, 10395 states have (on average 3.307166907166907) internal successors, (34378), 10395 states have internal predecessors, (34378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 34378 transitions. [2022-11-18 20:40:00,609 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 34378 transitions. Word has length 28 [2022-11-18 20:40:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:00,609 INFO L495 AbstractCegarLoop]: Abstraction has 10396 states and 34378 transitions. [2022-11-18 20:40:00,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.434782608695652) internal successors, (66), 45 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 34378 transitions. [2022-11-18 20:40:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:40:00,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:00,622 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:00,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-11-18 20:40:00,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:00,822 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1709628660, now seen corresponding path program 117 times [2022-11-18 20:40:00,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:00,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70121284] [2022-11-18 20:40:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:00,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:01,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70121284] [2022-11-18 20:40:01,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70121284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:01,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007886803] [2022-11-18 20:40:01,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:40:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:01,261 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-11-18 20:40:01,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:40:01,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:40:01,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:01,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:03,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007886803] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:03,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:03,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19] total 49 [2022-11-18 20:40:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378324658] [2022-11-18 20:40:03,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:40:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:40:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=1863, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:40:03,875 INFO L87 Difference]: Start difference. First operand 10396 states and 34378 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:08,195 INFO L93 Difference]: Finished difference Result 12182 states and 38629 transitions. [2022-11-18 20:40:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-18 20:40:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:40:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:08,221 INFO L225 Difference]: With dead ends: 12182 [2022-11-18 20:40:08,221 INFO L226 Difference]: Without dead ends: 12172 [2022-11-18 20:40:08,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2921 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2020, Invalid=7486, Unknown=0, NotChecked=0, Total=9506 [2022-11-18 20:40:08,221 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 309 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:08,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 12 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:40:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12172 states. [2022-11-18 20:40:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12172 to 10180. [2022-11-18 20:40:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10180 states, 10179 states have (on average 3.298752333235092) internal successors, (33578), 10179 states have internal predecessors, (33578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10180 states to 10180 states and 33578 transitions. [2022-11-18 20:40:08,445 INFO L78 Accepts]: Start accepts. Automaton has 10180 states and 33578 transitions. Word has length 28 [2022-11-18 20:40:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:08,446 INFO L495 AbstractCegarLoop]: Abstraction has 10180 states and 33578 transitions. [2022-11-18 20:40:08,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10180 states and 33578 transitions. [2022-11-18 20:40:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:40:08,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:08,461 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:08,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:08,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-11-18 20:40:08,661 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1090895547, now seen corresponding path program 118 times [2022-11-18 20:40:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:08,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140439903] [2022-11-18 20:40:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:08,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140439903] [2022-11-18 20:40:08,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140439903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:08,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909106511] [2022-11-18 20:40:08,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:40:08,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:08,899 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:08,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-11-18 20:40:09,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:40:09,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:09,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:40:09,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:09,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:09,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909106511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:09,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:09,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 17] total 32 [2022-11-18 20:40:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590323775] [2022-11-18 20:40:09,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:09,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:40:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:40:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:40:09,868 INFO L87 Difference]: Start difference. First operand 10180 states and 33578 transitions. Second operand has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:14,254 INFO L93 Difference]: Finished difference Result 15429 states and 50310 transitions. [2022-11-18 20:40:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:40:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:40:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:14,287 INFO L225 Difference]: With dead ends: 15429 [2022-11-18 20:40:14,288 INFO L226 Difference]: Without dead ends: 15382 [2022-11-18 20:40:14,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=854, Invalid=4116, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 20:40:14,288 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 551 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:14,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 95 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:40:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15382 states. [2022-11-18 20:40:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15382 to 12672. [2022-11-18 20:40:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12672 states, 12671 states have (on average 3.3450398547865206) internal successors, (42385), 12671 states have internal predecessors, (42385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12672 states to 12672 states and 42385 transitions. [2022-11-18 20:40:14,520 INFO L78 Accepts]: Start accepts. Automaton has 12672 states and 42385 transitions. Word has length 29 [2022-11-18 20:40:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:14,520 INFO L495 AbstractCegarLoop]: Abstraction has 12672 states and 42385 transitions. [2022-11-18 20:40:14,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 12672 states and 42385 transitions. [2022-11-18 20:40:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:40:14,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:14,537 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:14,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-11-18 20:40:14,738 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash -25829701, now seen corresponding path program 119 times [2022-11-18 20:40:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:14,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086536790] [2022-11-18 20:40:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086536790] [2022-11-18 20:40:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086536790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727501068] [2022-11-18 20:40:15,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:40:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:15,183 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:15,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-11-18 20:40:15,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:40:15,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:15,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:40:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:15,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:15,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727501068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:15,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:15,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 10] total 36 [2022-11-18 20:40:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248295953] [2022-11-18 20:40:15,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:40:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:40:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:40:15,845 INFO L87 Difference]: Start difference. First operand 12672 states and 42385 transitions. Second operand has 37 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:20,072 INFO L93 Difference]: Finished difference Result 15744 states and 50123 transitions. [2022-11-18 20:40:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-11-18 20:40:20,072 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:40:20,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:20,110 INFO L225 Difference]: With dead ends: 15744 [2022-11-18 20:40:20,110 INFO L226 Difference]: Without dead ends: 15738 [2022-11-18 20:40:20,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1553, Invalid=16537, Unknown=0, NotChecked=0, Total=18090 [2022-11-18 20:40:20,111 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 443 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 3854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:20,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 118 Invalid, 3854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:40:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15738 states. [2022-11-18 20:40:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15738 to 12688. [2022-11-18 20:40:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12688 states, 12687 states have (on average 3.3469693386931505) internal successors, (42463), 12687 states have internal predecessors, (42463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 42463 transitions. [2022-11-18 20:40:20,382 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 42463 transitions. Word has length 29 [2022-11-18 20:40:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 12688 states and 42463 transitions. [2022-11-18 20:40:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 42463 transitions. [2022-11-18 20:40:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:40:20,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:20,403 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:20,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-11-18 20:40:20,603 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -468215863, now seen corresponding path program 120 times [2022-11-18 20:40:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:20,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966231789] [2022-11-18 20:40:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:21,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966231789] [2022-11-18 20:40:21,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966231789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:21,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844758695] [2022-11-18 20:40:21,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:40:21,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:21,053 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:21,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-11-18 20:40:21,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 20:40:21,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:21,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:40:21,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:21,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:23,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844758695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:23,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:23,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-11-18 20:40:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171661825] [2022-11-18 20:40:23,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:40:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:40:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=2076, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:40:23,857 INFO L87 Difference]: Start difference. First operand 12688 states and 42463 transitions. Second operand has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:39,942 INFO L93 Difference]: Finished difference Result 24624 states and 77317 transitions. [2022-11-18 20:40:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-11-18 20:40:39,943 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:40:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:40,016 INFO L225 Difference]: With dead ends: 24624 [2022-11-18 20:40:40,017 INFO L226 Difference]: Without dead ends: 24576 [2022-11-18 20:40:40,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14357 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=6774, Invalid=31446, Unknown=0, NotChecked=0, Total=38220 [2022-11-18 20:40:40,019 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 663 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:40,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 77 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4964 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-18 20:40:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24576 states. [2022-11-18 20:40:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24576 to 12474. [2022-11-18 20:40:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12474 states, 12473 states have (on average 3.3457868997033593) internal successors, (41732), 12473 states have internal predecessors, (41732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12474 states to 12474 states and 41732 transitions. [2022-11-18 20:40:40,487 INFO L78 Accepts]: Start accepts. Automaton has 12474 states and 41732 transitions. Word has length 29 [2022-11-18 20:40:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:40,487 INFO L495 AbstractCegarLoop]: Abstraction has 12474 states and 41732 transitions. [2022-11-18 20:40:40,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12474 states and 41732 transitions. [2022-11-18 20:40:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:40:40,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:40,512 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:40,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:40,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-11-18 20:40:40,717 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1208507687, now seen corresponding path program 121 times [2022-11-18 20:40:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:40,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340121681] [2022-11-18 20:40:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:41,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:41,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340121681] [2022-11-18 20:40:41,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340121681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:41,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054034837] [2022-11-18 20:40:41,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:40:41,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:41,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:41,223 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:41,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-11-18 20:40:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:41,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:40:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:41,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:43,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054034837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:43,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:43,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 50 [2022-11-18 20:40:43,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896018892] [2022-11-18 20:40:43,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:43,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:40:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:40:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=2099, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:40:43,569 INFO L87 Difference]: Start difference. First operand 12474 states and 41732 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:57,380 INFO L93 Difference]: Finished difference Result 24798 states and 77352 transitions. [2022-11-18 20:40:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-11-18 20:40:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:40:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:57,440 INFO L225 Difference]: With dead ends: 24798 [2022-11-18 20:40:57,440 INFO L226 Difference]: Without dead ends: 24734 [2022-11-18 20:40:57,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14729 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=6987, Invalid=31233, Unknown=0, NotChecked=0, Total=38220 [2022-11-18 20:40:57,443 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 760 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4305 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:57,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 47 Invalid, 4571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4305 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:40:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24734 states. [2022-11-18 20:40:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24734 to 13212. [2022-11-18 20:40:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 3.354250246007115) internal successors, (44313), 13211 states have internal predecessors, (44313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 44313 transitions. [2022-11-18 20:40:57,793 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 44313 transitions. Word has length 29 [2022-11-18 20:40:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:57,794 INFO L495 AbstractCegarLoop]: Abstraction has 13212 states and 44313 transitions. [2022-11-18 20:40:57,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 44313 transitions. [2022-11-18 20:40:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:40:57,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:57,888 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:57,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-11-18 20:40:58,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-11-18 20:40:58,089 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:40:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1192371913, now seen corresponding path program 122 times [2022-11-18 20:40:58,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:58,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841628129] [2022-11-18 20:40:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:58,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:58,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841628129] [2022-11-18 20:40:58,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841628129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750223561] [2022-11-18 20:40:58,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:58,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:58,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:58,658 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:58,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-11-18 20:40:58,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:58,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:58,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:40:58,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:59,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750223561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:00,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:00,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 53 [2022-11-18 20:41:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15317127] [2022-11-18 20:41:00,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-18 20:41:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-18 20:41:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=2399, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 20:41:00,749 INFO L87 Difference]: Start difference. First operand 13212 states and 44313 transitions. Second operand has 54 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:13,369 INFO L93 Difference]: Finished difference Result 25570 states and 80023 transitions. [2022-11-18 20:41:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-18 20:41:13,370 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:41:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:13,431 INFO L225 Difference]: With dead ends: 25570 [2022-11-18 20:41:13,431 INFO L226 Difference]: Without dead ends: 25468 [2022-11-18 20:41:13,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10910 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=6017, Invalid=24085, Unknown=0, NotChecked=0, Total=30102 [2022-11-18 20:41:13,432 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 686 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4363 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:13,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 38 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4363 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:41:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25468 states. [2022-11-18 20:41:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25468 to 13584. [2022-11-18 20:41:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13584 states, 13583 states have (on average 3.379886622984613) internal successors, (45909), 13583 states have internal predecessors, (45909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13584 states to 13584 states and 45909 transitions. [2022-11-18 20:41:13,769 INFO L78 Accepts]: Start accepts. Automaton has 13584 states and 45909 transitions. Word has length 29 [2022-11-18 20:41:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:13,769 INFO L495 AbstractCegarLoop]: Abstraction has 13584 states and 45909 transitions. [2022-11-18 20:41:13,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13584 states and 45909 transitions. [2022-11-18 20:41:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:41:13,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:13,790 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:13,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-11-18 20:41:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-11-18 20:41:13,991 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:41:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1563927719, now seen corresponding path program 123 times [2022-11-18 20:41:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804480056] [2022-11-18 20:41:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:14,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804480056] [2022-11-18 20:41:14,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804480056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555299578] [2022-11-18 20:41:14,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:41:14,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:14,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:14,396 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:14,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-11-18 20:41:14,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:41:14,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:14,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:41:14,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:14,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:15,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555299578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:15,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:15,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 52 [2022-11-18 20:41:15,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455596700] [2022-11-18 20:41:15,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:15,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:41:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:41:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=2294, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:41:15,975 INFO L87 Difference]: Start difference. First operand 13584 states and 45909 transitions. Second operand has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:23,028 INFO L93 Difference]: Finished difference Result 21280 states and 65805 transitions. [2022-11-18 20:41:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-18 20:41:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:41:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:23,084 INFO L225 Difference]: With dead ends: 21280 [2022-11-18 20:41:23,084 INFO L226 Difference]: Without dead ends: 21160 [2022-11-18 20:41:23,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7575 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4317, Invalid=17145, Unknown=0, NotChecked=0, Total=21462 [2022-11-18 20:41:23,086 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 529 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:23,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 27 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:41:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21160 states. [2022-11-18 20:41:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21160 to 13292. [2022-11-18 20:41:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13292 states, 13291 states have (on average 3.3784515837784967) internal successors, (44903), 13291 states have internal predecessors, (44903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13292 states to 13292 states and 44903 transitions. [2022-11-18 20:41:23,415 INFO L78 Accepts]: Start accepts. Automaton has 13292 states and 44903 transitions. Word has length 29 [2022-11-18 20:41:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:23,415 INFO L495 AbstractCegarLoop]: Abstraction has 13292 states and 44903 transitions. [2022-11-18 20:41:23,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.320754716981132) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 13292 states and 44903 transitions. [2022-11-18 20:41:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:41:23,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:23,436 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:23,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-11-18 20:41:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-11-18 20:41:23,637 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:41:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash -19937399, now seen corresponding path program 124 times [2022-11-18 20:41:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841616276] [2022-11-18 20:41:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:41:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:24,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841616276] [2022-11-18 20:41:24,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841616276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:24,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731857420] [2022-11-18 20:41:24,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:41:24,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:24,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:24,148 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:24,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-11-18 20:41:24,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:41:24,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:24,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:41:24,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 18 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:24,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:41:25,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731857420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:25,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:25,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 52 [2022-11-18 20:41:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120889834] [2022-11-18 20:41:25,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:25,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:41:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:41:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2317, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:41:25,760 INFO L87 Difference]: Start difference. First operand 13292 states and 44903 transitions. Second operand has 53 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 52 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:32,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:32,489 INFO L93 Difference]: Finished difference Result 22526 states and 70585 transitions. [2022-11-18 20:41:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-18 20:41:32,490 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 52 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:41:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:32,541 INFO L225 Difference]: With dead ends: 22526 [2022-11-18 20:41:32,541 INFO L226 Difference]: Without dead ends: 22392 [2022-11-18 20:41:32,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8191 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4777, Invalid=18479, Unknown=0, NotChecked=0, Total=23256 [2022-11-18 20:41:32,542 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 661 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:32,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 26 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:41:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22392 states. [2022-11-18 20:41:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22392 to 13600. [2022-11-18 20:41:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13600 states, 13599 states have (on average 3.3834105448930067) internal successors, (46011), 13599 states have internal predecessors, (46011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 46011 transitions. [2022-11-18 20:41:32,868 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 46011 transitions. Word has length 29 [2022-11-18 20:41:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:32,868 INFO L495 AbstractCegarLoop]: Abstraction has 13600 states and 46011 transitions. [2022-11-18 20:41:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 52 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 46011 transitions. [2022-11-18 20:41:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:41:32,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:32,887 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:32,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-11-18 20:41:33,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:33,088 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-18 20:41:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1144674791, now seen corresponding path program 125 times [2022-11-18 20:41:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:33,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205648478] [2022-11-18 20:41:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:33,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:41:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205648478] [2022-11-18 20:41:33,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205648478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480435539] [2022-11-18 20:41:33,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:41:33,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:33,577 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:33,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c756ec53-0eb0-4c51-aa9b-df34555be391/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-11-18 20:41:33,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:41:33,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:33,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:41:33,757 INFO L286 TraceCheckSpWp]: Computing forward predicates...