./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/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_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/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_3514c101-61e6-49bf-962a-8ddda38dba82/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 b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 --- 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 20:54:31,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:54:31,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:54:31,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:54:31,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:54:31,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:54:31,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:54:31,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:54:31,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:54:31,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:54:31,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:54:31,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:54:31,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:54:31,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:54:31,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:54:31,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:54:31,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:54:31,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:54:31,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:54:31,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:54:31,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:54:31,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:54:31,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:54:31,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:54:31,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:54:31,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:54:32,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:54:32,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:54:32,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:54:32,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:54:32,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:54:32,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:54:32,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:54:32,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:54:32,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:54:32,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:54:32,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:54:32,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:54:32,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:54:32,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:54:32,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:54:32,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:54:32,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:54:32,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:54:32,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:54:32,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:54:32,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:54:32,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:54:32,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:54:32,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:54:32,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:54:32,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:54:32,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:54:32,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:54:32,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:54:32,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:54:32,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:54:32,066 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:54:32,066 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:54:32,067 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:54:32,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:54:32,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:54:32,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:54:32,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:54:32,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:54:32,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:54:32,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:54:32,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:32,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:54:32,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:54:32,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:54:32,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:54:32,072 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_3514c101-61e6-49bf-962a-8ddda38dba82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b415e0519ab150e9247d3d9d0133f92cfd07c34f9918f9ebd19cf8109bf4e7 [2022-11-18 20:54:32,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:54:32,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:54:32,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:54:32,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:54:32,445 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:54:32,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2022-11-18 20:54:32,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/data/0c58bab9f/0f3ff6f016f942bd9e11901ff8c24bf7/FLAG3c64b805a [2022-11-18 20:54:33,072 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:54:33,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i [2022-11-18 20:54:33,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/data/0c58bab9f/0f3ff6f016f942bd9e11901ff8c24bf7/FLAG3c64b805a [2022-11-18 20:54:33,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/data/0c58bab9f/0f3ff6f016f942bd9e11901ff8c24bf7 [2022-11-18 20:54:33,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:54:33,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:54:33,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:33,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:54:33,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:54:33,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:33" (1/1) ... [2022-11-18 20:54:33,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd20081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:33, skipping insertion in model container [2022-11-18 20:54:33,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:33" (1/1) ... [2022-11-18 20:54:33,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:54:33,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:54:33,914 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_3514c101-61e6-49bf-962a-8ddda38dba82/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2022-11-18 20:54:33,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:33,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:54:34,016 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_3514c101-61e6-49bf-962a-8ddda38dba82/sv-benchmarks/c/list-simple/sll2c_insert_unequal.i[24872,24885] [2022-11-18 20:54:34,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:34,056 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:54:34,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34 WrapperNode [2022-11-18 20:54:34,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:34,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:34,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:54:34,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:54:34,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,112 INFO L138 Inliner]: procedures = 127, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 178 [2022-11-18 20:54:34,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:34,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:54:34,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:54:34,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:54:34,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,152 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:54:34,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:54:34,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:54:34,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:54:34,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (1/1) ... [2022-11-18 20:54:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:34,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:54:34,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:54:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:54:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:54:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-18 20:54:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:54:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:54:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:54:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:54:34,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:54:34,398 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:54:34,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:54:34,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:54:34,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:54:34,949 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:54:34,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:34 BoogieIcfgContainer [2022-11-18 20:54:34,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:54:34,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:54:34,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:54:34,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:54:34,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:54:33" (1/3) ... [2022-11-18 20:54:34,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e782b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:34, skipping insertion in model container [2022-11-18 20:54:34,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:34" (2/3) ... [2022-11-18 20:54:34,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e782b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:34, skipping insertion in model container [2022-11-18 20:54:34,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:34" (3/3) ... [2022-11-18 20:54:34,963 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_insert_unequal.i [2022-11-18 20:54:34,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:54:34,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2022-11-18 20:54:35,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:54:35,055 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;@73fd7309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:54:35,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-18 20:54:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 74 states have (on average 2.081081081081081) internal successors, (154), 136 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:54:35,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:35,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:54:35,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash 896568277, now seen corresponding path program 1 times [2022-11-18 20:54:35,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:35,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595526647] [2022-11-18 20:54:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:35,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:35,474 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 20:54:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595526647] [2022-11-18 20:54:35,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595526647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:35,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:54:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622674558] [2022-11-18 20:54:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:35,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:54:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:54:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:54:35,527 INFO L87 Difference]: Start difference. First operand has 141 states, 74 states have (on average 2.081081081081081) internal successors, (154), 136 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:35,708 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2022-11-18 20:54:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:54:35,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:54:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:35,720 INFO L225 Difference]: With dead ends: 139 [2022-11-18 20:54:35,721 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 20:54:35,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:54:35,726 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:35,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 225 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:54:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 20:54:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-11-18 20:54:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 72 states have (on average 1.9722222222222223) internal successors, (142), 131 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2022-11-18 20:54:35,792 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 6 [2022-11-18 20:54:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:35,793 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2022-11-18 20:54:35,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2022-11-18 20:54:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:54:35,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:35,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:54:35,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:54:35,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash 896568278, now seen corresponding path program 1 times [2022-11-18 20:54:35,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:35,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155736807] [2022-11-18 20:54:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:35,991 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 20:54:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:35,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155736807] [2022-11-18 20:54:35,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155736807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:35,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:36,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:54:36,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808906836] [2022-11-18 20:54:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:36,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:54:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:54:36,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:54:36,006 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:36,187 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2022-11-18 20:54:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:54:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:54:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:36,190 INFO L225 Difference]: With dead ends: 134 [2022-11-18 20:54:36,191 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 20:54:36,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:54:36,193 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 227 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 20:54:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-18 20:54:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 129 states have internal predecessors, (140), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2022-11-18 20:54:36,204 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 6 [2022-11-18 20:54:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:36,205 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2022-11-18 20:54:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2022-11-18 20:54:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:54:36,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:36,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:54:36,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash 24922967, now seen corresponding path program 1 times [2022-11-18 20:54:36,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:36,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633876043] [2022-11-18 20:54:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,334 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 20:54:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633876043] [2022-11-18 20:54:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633876043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:36,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:36,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:54:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273984252] [2022-11-18 20:54:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:54:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:54:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:54:36,338 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:36,544 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2022-11-18 20:54:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:54:36,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-18 20:54:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:36,546 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:54:36,546 INFO L226 Difference]: Without dead ends: 141 [2022-11-18 20:54:36,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:54:36,548 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 5 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:36,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 338 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-18 20:54:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2022-11-18 20:54:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 130 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2022-11-18 20:54:36,563 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 13 [2022-11-18 20:54:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:36,563 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2022-11-18 20:54:36,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2022-11-18 20:54:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:54:36,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:36,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:36,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:54:36,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1284022556, now seen corresponding path program 1 times [2022-11-18 20:54:36,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:36,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505588170] [2022-11-18 20:54:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:54:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:36,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505588170] [2022-11-18 20:54:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505588170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:36,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:36,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58563035] [2022-11-18 20:54:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:54:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:54:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:36,902 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:54:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:37,268 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2022-11-18 20:54:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-18 20:54:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:37,271 INFO L225 Difference]: With dead ends: 135 [2022-11-18 20:54:37,271 INFO L226 Difference]: Without dead ends: 135 [2022-11-18 20:54:37,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:37,273 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 13 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:37,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 488 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:54:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-18 20:54:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2022-11-18 20:54:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.917808219178082) internal successors, (140), 129 states have internal predecessors, (140), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2022-11-18 20:54:37,287 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 22 [2022-11-18 20:54:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:37,288 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2022-11-18 20:54:37,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:54:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2022-11-18 20:54:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:54:37,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:37,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:37,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:54:37,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1284022557, now seen corresponding path program 1 times [2022-11-18 20:54:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304771812] [2022-11-18 20:54:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:54:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:37,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304771812] [2022-11-18 20:54:37,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304771812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:37,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:37,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626737744] [2022-11-18 20:54:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:54:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:54:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:37,787 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:54:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:38,145 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-11-18 20:54:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-18 20:54:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:38,149 INFO L225 Difference]: With dead ends: 134 [2022-11-18 20:54:38,150 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 20:54:38,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:38,151 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 11 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:38,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 512 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:54:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 20:54:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-11-18 20:54:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 73 states have (on average 1.904109589041096) internal successors, (139), 128 states have internal predecessors, (139), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2022-11-18 20:54:38,160 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 22 [2022-11-18 20:54:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:38,160 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2022-11-18 20:54:38,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:54:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2022-11-18 20:54:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:54:38,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:38,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:54:38,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1337216453, now seen corresponding path program 1 times [2022-11-18 20:54:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795181536] [2022-11-18 20:54:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:54:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795181536] [2022-11-18 20:54:38,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795181536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:38,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701874043] [2022-11-18 20:54:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:38,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:38,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:38,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:54:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:54:38,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:38,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:54:38,944 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_256 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_256))) is different from true [2022-11-18 20:54:38,979 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_256 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_256))) is different from true [2022-11-18 20:54:39,017 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:54:39,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 20:54:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-18 20:54:39,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:54:39,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701874043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:39,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:54:39,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2022-11-18 20:54:39,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799016969] [2022-11-18 20:54:39,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:39,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:54:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:54:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=219, Unknown=2, NotChecked=62, Total=342 [2022-11-18 20:54:39,503 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:54:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:39,990 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2022-11-18 20:54:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-11-18 20:54:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:39,991 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:54:39,991 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:54:39,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=271, Unknown=2, NotChecked=70, Total=420 [2022-11-18 20:54:39,993 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 26 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:40,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 852 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 513 Invalid, 0 Unknown, 402 Unchecked, 0.4s Time] [2022-11-18 20:54:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:54:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-18 20:54:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 127 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2022-11-18 20:54:40,031 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 25 [2022-11-18 20:54:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:40,031 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2022-11-18 20:54:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:54:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2022-11-18 20:54:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:54:40,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:40,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:40,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:54:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:54:40,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1337216454, now seen corresponding path program 1 times [2022-11-18 20:54:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328766102] [2022-11-18 20:54:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:54:40,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328766102] [2022-11-18 20:54:40,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328766102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063846687] [2022-11-18 20:54:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:40,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:40,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:40,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:54:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:40,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:54:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:41,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:54:41,380 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:54:41,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:54:41,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2022-11-18 20:54:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:41,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:41,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063846687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:41,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:41,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-11-18 20:54:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739132784] [2022-11-18 20:54:41,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:41,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:54:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:54:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:54:41,719 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:54:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:42,759 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2022-11-18 20:54:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:54:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2022-11-18 20:54:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:42,761 INFO L225 Difference]: With dead ends: 133 [2022-11-18 20:54:42,761 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:54:42,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:54:42,763 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 144 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:42,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 979 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:54:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:54:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2022-11-18 20:54:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 126 states have internal predecessors, (137), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2022-11-18 20:54:42,778 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 25 [2022-11-18 20:54:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:42,779 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2022-11-18 20:54:42,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:54:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2022-11-18 20:54:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:54:42,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:42,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:42,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:54:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:54:42,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash -148939745, now seen corresponding path program 1 times [2022-11-18 20:54:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:42,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274341607] [2022-11-18 20:54:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:54:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:43,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274341607] [2022-11-18 20:54:43,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274341607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:43,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427045144] [2022-11-18 20:54:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:43,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:43,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:54:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:43,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:54:43,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:43,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:54:43,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:54:43,905 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_521 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_521))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 20:54:43,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:43,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:54:44,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:54:44,026 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_522 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_522))))) is different from true [2022-11-18 20:54:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:44,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:54:44,135 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2022-11-18 20:54:44,163 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:54:44,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:54:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 18 not checked. [2022-11-18 20:54:44,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:44,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427045144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:44,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:44,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2022-11-18 20:54:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608033596] [2022-11-18 20:54:44,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:54:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:54:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=122, Unknown=3, NotChecked=72, Total=240 [2022-11-18 20:54:44,401 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:54:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:45,013 INFO L93 Difference]: Finished difference Result 155 states and 172 transitions. [2022-11-18 20:54:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:54:45,014 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2022-11-18 20:54:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:45,015 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:54:45,015 INFO L226 Difference]: Without dead ends: 155 [2022-11-18 20:54:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=189, Unknown=3, NotChecked=90, Total=342 [2022-11-18 20:54:45,016 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 174 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:45,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 543 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 526 Invalid, 0 Unknown, 485 Unchecked, 0.5s Time] [2022-11-18 20:54:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-18 20:54:45,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2022-11-18 20:54:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 128 states have internal predecessors, (141), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:54:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2022-11-18 20:54:45,021 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 37 [2022-11-18 20:54:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:45,027 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2022-11-18 20:54:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:54:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2022-11-18 20:54:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:54:45,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:45,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:45,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:45,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:45,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -148939744, now seen corresponding path program 1 times [2022-11-18 20:54:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602798556] [2022-11-18 20:54:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:45,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602798556] [2022-11-18 20:54:45,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602798556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:45,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:45,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:54:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734005304] [2022-11-18 20:54:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:45,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:54:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:54:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:54:45,955 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 9 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:46,402 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2022-11-18 20:54:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:54:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2022-11-18 20:54:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:46,404 INFO L225 Difference]: With dead ends: 144 [2022-11-18 20:54:46,404 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 20:54:46,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:54:46,405 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 308 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:46,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 253 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:54:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 20:54:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2022-11-18 20:54:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 82 states have (on average 1.5975609756097562) internal successors, (131), 119 states have internal predecessors, (131), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:54:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2022-11-18 20:54:46,412 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 37 [2022-11-18 20:54:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:46,412 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2022-11-18 20:54:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2022-11-18 20:54:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:54:46,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:46,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:46,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:54:46,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:46,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash -362722266, now seen corresponding path program 1 times [2022-11-18 20:54:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:46,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192717355] [2022-11-18 20:54:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:54:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192717355] [2022-11-18 20:54:47,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192717355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:47,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139492818] [2022-11-18 20:54:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:47,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:47,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:54:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:47,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 20:54:47,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:47,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-18 20:54:47,762 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_782 (Array Int Int))) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_782)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-11-18 20:54:47,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:47,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:54:47,832 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-18 20:54:47,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2022-11-18 20:54:47,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:54:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:54:47,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:54:47,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139492818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:47,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:47,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 24 [2022-11-18 20:54:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590458207] [2022-11-18 20:54:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:47,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:54:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:54:47,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=483, Unknown=1, NotChecked=44, Total=600 [2022-11-18 20:54:47,883 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:48,554 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2022-11-18 20:54:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:54:48,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-11-18 20:54:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:48,556 INFO L225 Difference]: With dead ends: 232 [2022-11-18 20:54:48,556 INFO L226 Difference]: Without dead ends: 232 [2022-11-18 20:54:48,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=716, Unknown=1, NotChecked=56, Total=930 [2022-11-18 20:54:48,557 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 950 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:48,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 435 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 526 Invalid, 0 Unknown, 205 Unchecked, 0.5s Time] [2022-11-18 20:54:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-18 20:54:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 128. [2022-11-18 20:54:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 121 states have internal predecessors, (135), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:54:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2022-11-18 20:54:48,562 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 40 [2022-11-18 20:54:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:48,562 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2022-11-18 20:54:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2022-11-18 20:54:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:54:48,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:48,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:48,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:54:48,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash -362722265, now seen corresponding path program 1 times [2022-11-18 20:54:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298180242] [2022-11-18 20:54:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:54:50,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:50,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298180242] [2022-11-18 20:54:50,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298180242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:50,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737052899] [2022-11-18 20:54:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:50,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:50,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:50,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:50,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:54:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:54:50,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:50,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:54:50,414 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_938 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_938))) is different from true [2022-11-18 20:54:50,425 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_938 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_938))) is different from true [2022-11-18 20:54:50,447 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:54:50,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 20:54:50,675 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:54:50,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 20:54:51,410 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_943 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_943))) (exists ((v_ArrVal_940 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_940) |c_#length|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_944 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_944))))) is different from true [2022-11-18 20:54:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:51,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:54:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:51,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-11-18 20:54:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:51,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-11-18 20:54:51,500 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-18 20:54:51,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:54:51,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-18 20:54:51,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-18 20:54:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 15 not checked. [2022-11-18 20:54:51,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:52,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737052899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:52,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:52,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 40 [2022-11-18 20:54:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362716111] [2022-11-18 20:54:52,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:54:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:54:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1598, Unknown=4, NotChecked=246, Total=1980 [2022-11-18 20:54:52,763 INFO L87 Difference]: Start difference. First operand 128 states and 145 transitions. Second operand has 41 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:54:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:56,117 INFO L93 Difference]: Finished difference Result 247 states and 273 transitions. [2022-11-18 20:54:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:54:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-11-18 20:54:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:56,122 INFO L225 Difference]: With dead ends: 247 [2022-11-18 20:54:56,122 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 20:54:56,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=349, Invalid=2739, Unknown=4, NotChecked=330, Total=3422 [2022-11-18 20:54:56,125 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1800 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:56,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1043 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1829 Invalid, 0 Unknown, 614 Unchecked, 1.8s Time] [2022-11-18 20:54:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 20:54:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 115. [2022-11-18 20:54:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 110 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2022-11-18 20:54:56,131 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 40 [2022-11-18 20:54:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:56,131 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2022-11-18 20:54:56,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:54:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2022-11-18 20:54:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:54:56,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:56,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:56,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:54:56,340 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1640510023, now seen corresponding path program 1 times [2022-11-18 20:54:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362608270] [2022-11-18 20:54:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:56,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362608270] [2022-11-18 20:54:56,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362608270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:56,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:56,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:54:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638010909] [2022-11-18 20:54:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:56,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:54:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:54:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:54:56,440 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:56,547 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2022-11-18 20:54:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:54:56,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-18 20:54:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:56,549 INFO L225 Difference]: With dead ends: 177 [2022-11-18 20:54:56,549 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 20:54:56,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:54:56,550 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 85 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:56,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 273 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:54:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 20:54:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 116. [2022-11-18 20:54:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.618421052631579) internal successors, (123), 111 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2022-11-18 20:54:56,555 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 41 [2022-11-18 20:54:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:56,555 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2022-11-18 20:54:56,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2022-11-18 20:54:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:54:56,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:56,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:54:56,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash 277382184, now seen corresponding path program 1 times [2022-11-18 20:54:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:56,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739407692] [2022-11-18 20:54:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:54:56,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:56,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739407692] [2022-11-18 20:54:56,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739407692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:56,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:56,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:56,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894985726] [2022-11-18 20:54:56,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:56,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:54:56,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:54:56,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:56,767 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:57,017 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-11-18 20:54:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-18 20:54:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:57,018 INFO L225 Difference]: With dead ends: 131 [2022-11-18 20:54:57,018 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 20:54:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:57,019 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 90 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 337 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 20:54:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 113. [2022-11-18 20:54:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 108 states have internal predecessors, (120), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2022-11-18 20:54:57,025 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 43 [2022-11-18 20:54:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:57,026 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2022-11-18 20:54:57,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2022-11-18 20:54:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:54:57,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:57,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:57,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:54:57,028 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 277382185, now seen corresponding path program 1 times [2022-11-18 20:54:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112644544] [2022-11-18 20:54:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:54:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112644544] [2022-11-18 20:54:57,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112644544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:57,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356571380] [2022-11-18 20:54:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:57,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:57,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:57,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:54:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:57,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:54:57,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:57,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:54:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356571380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:57,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:57,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:54:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142591584] [2022-11-18 20:54:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:57,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:54:57,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:54:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:57,563 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:57,585 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2022-11-18 20:54:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:54:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-11-18 20:54:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:57,587 INFO L225 Difference]: With dead ends: 112 [2022-11-18 20:54:57,588 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 20:54:57,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:57,589 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 104 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:57,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 234 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:54:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 20:54:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-11-18 20:54:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 75 states have (on average 1.5733333333333333) internal successors, (118), 107 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2022-11-18 20:54:57,594 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 43 [2022-11-18 20:54:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:57,594 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2022-11-18 20:54:57,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2022-11-18 20:54:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:54:57,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:57,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:57,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:57,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:54:57,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash 278707084, now seen corresponding path program 1 times [2022-11-18 20:54:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598001396] [2022-11-18 20:54:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:54:58,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:58,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598001396] [2022-11-18 20:54:58,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598001396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:58,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823949889] [2022-11-18 20:54:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:58,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:58,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:58,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:58,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:54:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:54:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:58,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:54:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823949889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:58,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-18 20:54:58,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95138951] [2022-11-18 20:54:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:54:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:54:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:58,435 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:58,468 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2022-11-18 20:54:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:54:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-11-18 20:54:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:58,470 INFO L225 Difference]: With dead ends: 109 [2022-11-18 20:54:58,470 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 20:54:58,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:54:58,471 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 277 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:58,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 148 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:54:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 20:54:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-18 20:54:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 104 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-18 20:54:58,476 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 43 [2022-11-18 20:54:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:58,476 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-18 20:54:58,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:54:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-18 20:54:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 20:54:58,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:58,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:58,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:58,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:54:58,690 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 49983393, now seen corresponding path program 1 times [2022-11-18 20:54:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381703971] [2022-11-18 20:54:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:58,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381703971] [2022-11-18 20:54:58,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381703971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:58,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:58,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:54:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384218237] [2022-11-18 20:54:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:58,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:54:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:54:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:54:58,838 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:59,000 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2022-11-18 20:54:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-18 20:54:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:59,001 INFO L225 Difference]: With dead ends: 126 [2022-11-18 20:54:59,001 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 20:54:59,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:59,002 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 84 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:59,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 225 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:54:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 20:54:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2022-11-18 20:54:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 74 states have (on average 1.527027027027027) internal successors, (113), 103 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2022-11-18 20:54:59,006 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 44 [2022-11-18 20:54:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:59,006 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2022-11-18 20:54:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2022-11-18 20:54:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 20:54:59,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:59,009 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:59,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:54:59,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 49983394, now seen corresponding path program 1 times [2022-11-18 20:54:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218930943] [2022-11-18 20:54:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:59,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218930943] [2022-11-18 20:54:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218930943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:59,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:59,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:54:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100037083] [2022-11-18 20:54:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:59,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:54:59,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:54:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:54:59,187 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:59,410 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2022-11-18 20:54:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:59,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-18 20:54:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:59,411 INFO L225 Difference]: With dead ends: 107 [2022-11-18 20:54:59,412 INFO L226 Difference]: Without dead ends: 107 [2022-11-18 20:54:59,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:59,412 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 87 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:59,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 218 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-18 20:54:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-18 20:54:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.5135135135135136) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2022-11-18 20:54:59,416 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 44 [2022-11-18 20:54:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:59,416 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2022-11-18 20:54:59,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2022-11-18 20:54:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:54:59,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:59,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:54:59,417 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1549485211, now seen corresponding path program 1 times [2022-11-18 20:54:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713875989] [2022-11-18 20:54:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:54:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:54:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:59,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713875989] [2022-11-18 20:54:59,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713875989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:59,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:59,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568452554] [2022-11-18 20:54:59,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:54:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:54:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:59,766 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:59,984 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2022-11-18 20:54:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 20:54:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:59,985 INFO L225 Difference]: With dead ends: 104 [2022-11-18 20:54:59,985 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 20:54:59,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:59,986 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 84 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:59,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 340 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 20:54:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-11-18 20:54:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 74 states have (on average 1.472972972972973) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:54:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-18 20:54:59,989 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 45 [2022-11-18 20:54:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:59,989 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-18 20:54:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:54:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-18 20:54:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:54:59,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:59,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:54:59,991 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:54:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2108722015, now seen corresponding path program 1 times [2022-11-18 20:54:59,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:59,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125281283] [2022-11-18 20:54:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:55:01,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125281283] [2022-11-18 20:55:01,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125281283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396121823] [2022-11-18 20:55:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:01,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:01,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:01,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:55:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:01,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 20:55:01,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:01,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:55:01,863 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:55:01,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2022-11-18 20:55:01,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:55:02,089 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:55:02,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 20:55:02,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:02,322 INFO L321 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2022-11-18 20:55:02,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2022-11-18 20:55:02,339 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:55:03,000 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:55:03,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 54 [2022-11-18 20:55:03,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 20:55:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:03,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-18 20:55:03,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 20:55:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:55:03,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:03,440 INFO L321 Elim1Store]: treesize reduction 5, result has 72.2 percent of original size [2022-11-18 20:55:03,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 20:55:03,448 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1944 (Array Int Int)) (v_ArrVal_1943 (Array Int Int))) (= |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_1943) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_1944) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) is different from false [2022-11-18 20:55:03,455 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1944 (Array Int Int)) (v_ArrVal_1943 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base| v_ArrVal_1943) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_1944) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base|)) is different from false [2022-11-18 20:55:03,789 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1944 (Array Int Int)) (v_ArrVal_1943 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_13| Int) (v_ArrVal_1948 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_13| v_ArrVal_1948))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (= .cse0 (select (select (store (store .cse1 .cse0 v_ArrVal_1943) |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_13| v_ArrVal_1944) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (< |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_13| |c_#StackHeapBarrier|)))) is different from false [2022-11-18 20:55:03,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396121823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:03,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:55:03,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 45 [2022-11-18 20:55:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551255870] [2022-11-18 20:55:03,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:55:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:55:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2334, Unknown=49, NotChecked=300, Total=2862 [2022-11-18 20:55:03,793 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 46 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 39 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:55:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:08,558 INFO L93 Difference]: Finished difference Result 317 states and 351 transitions. [2022-11-18 20:55:08,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:55:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 39 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 49 [2022-11-18 20:55:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:08,560 INFO L225 Difference]: With dead ends: 317 [2022-11-18 20:55:08,560 INFO L226 Difference]: Without dead ends: 317 [2022-11-18 20:55:08,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=823, Invalid=6972, Unknown=49, NotChecked=528, Total=8372 [2022-11-18 20:55:08,563 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2683 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:08,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 1297 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:55:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-18 20:55:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 105. [2022-11-18 20:55:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 100 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:55:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-11-18 20:55:08,568 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 49 [2022-11-18 20:55:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:08,568 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-11-18 20:55:08,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 39 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:55:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-11-18 20:55:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:55:08,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:08,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:08,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:55:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:08,780 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2108722016, now seen corresponding path program 1 times [2022-11-18 20:55:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742359913] [2022-11-18 20:55:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:55:11,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:11,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742359913] [2022-11-18 20:55:11,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742359913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:11,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056804762] [2022-11-18 20:55:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:11,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:11,591 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:11,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:55:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:11,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:55:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:12,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-11-18 20:55:12,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:55:12,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:55:12,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:55:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:13,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2022-11-18 20:55:13,114 INFO L321 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2022-11-18 20:55:13,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-18 20:55:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:13,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2022-11-18 20:55:13,144 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-18 20:55:13,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:55:13,824 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:55:13,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 50 [2022-11-18 20:55:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:13,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-11-18 20:55:13,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:13,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-18 20:55:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:13,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-11-18 20:55:14,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-11-18 20:55:14,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-18 20:55:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:55:14,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:15,058 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base| v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2134 (Array Int Int)) (v_ArrVal_2133 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base| v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~last~1#1.base| v_ArrVal_2133) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2134) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-11-18 20:55:15,348 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (and (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2134 (Array Int Int)) (v_ArrVal_2133 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2133) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2134) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2022-11-18 20:55:15,371 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (and (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (forall ((v_ArrVal_2135 (Array Int Int)) (v_ArrVal_2134 (Array Int Int)) (v_ArrVal_2133 (Array Int Int)) (v_ArrVal_2132 (Array Int Int))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2132) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base| v_ArrVal_2135) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2133) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base| v_ArrVal_2134) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2022-11-18 20:55:15,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056804762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:15,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:55:15,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24] total 50 [2022-11-18 20:55:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123360482] [2022-11-18 20:55:15,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:15,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:55:15,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:55:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=3037, Unknown=74, NotChecked=342, Total=3660 [2022-11-18 20:55:15,738 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 51 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 44 states have internal predecessors, (80), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:55:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:21,787 INFO L93 Difference]: Finished difference Result 257 states and 288 transitions. [2022-11-18 20:55:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:55:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 44 states have internal predecessors, (80), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2022-11-18 20:55:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:21,789 INFO L225 Difference]: With dead ends: 257 [2022-11-18 20:55:21,789 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 20:55:21,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=623, Invalid=7141, Unknown=80, NotChecked=528, Total=8372 [2022-11-18 20:55:21,794 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1029 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:21,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1667 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:55:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 20:55:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 107. [2022-11-18 20:55:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.4125) internal successors, (113), 102 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:55:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-11-18 20:55:21,800 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 49 [2022-11-18 20:55:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:21,800 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-11-18 20:55:21,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 44 states have internal predecessors, (80), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:55:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-11-18 20:55:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:55:21,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:21,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:21,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:55:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:22,008 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 776998409, now seen corresponding path program 1 times [2022-11-18 20:55:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:22,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419509564] [2022-11-18 20:55:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:55:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419509564] [2022-11-18 20:55:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419509564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689719490] [2022-11-18 20:55:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:22,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:22,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:55:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:22,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:55:22,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:22,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:55:22,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:55:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:55:22,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:55:22,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689719490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:55:22,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:55:22,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-11-18 20:55:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042680352] [2022-11-18 20:55:22,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:22,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:55:22,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:55:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:55:22,726 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:55:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:22,931 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2022-11-18 20:55:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:55:22,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-18 20:55:22,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:22,932 INFO L225 Difference]: With dead ends: 99 [2022-11-18 20:55:22,932 INFO L226 Difference]: Without dead ends: 99 [2022-11-18 20:55:22,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:55:22,933 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 14 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:22,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 524 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:55:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-18 20:55:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-18 20:55:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 94 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:55:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2022-11-18 20:55:22,937 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 50 [2022-11-18 20:55:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:22,937 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2022-11-18 20:55:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:55:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2022-11-18 20:55:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:55:22,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:22,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:22,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:55:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:23,145 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -742704791, now seen corresponding path program 1 times [2022-11-18 20:55:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:23,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856088952] [2022-11-18 20:55:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:55:26,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:26,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856088952] [2022-11-18 20:55:26,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856088952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:26,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560236221] [2022-11-18 20:55:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:26,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:26,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:55:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-18 20:55:26,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:26,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:55:27,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:55:27,206 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:55:27,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:55:27,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 20:55:27,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:55:27,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-11-18 20:55:27,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:55:27,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:55:27,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:55:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:28,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2022-11-18 20:55:28,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:28,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-11-18 20:55:28,388 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-18 20:55:28,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:55:28,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2022-11-18 20:55:29,211 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:55:29,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2022-11-18 20:55:29,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-18 20:55:29,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:29,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:55:29,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:29,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 20:55:29,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:55:29,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:29,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:55:29,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-18 20:55:29,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:55:29,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:55:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:29,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:29,962 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2509 (Array Int Int)) (v_ArrVal_2508 (Array Int Int)) (v_ArrVal_2507 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2508) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2507) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_2509) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-11-18 20:55:33,889 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| Int) (v_ArrVal_2506 (Array Int Int)) (v_ArrVal_2504 (Array Int Int)) (v_ArrVal_2521 (Array Int Int)) (v_ArrVal_2520 (Array Int Int)) (v_ArrVal_2503 Int) (v_ArrVal_2509 (Array Int Int)) (v_ArrVal_2519 (Array Int Int)) (v_ArrVal_2508 (Array Int Int)) (v_ArrVal_2507 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2519))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (or (not (<= 0 .cse0)) (= (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2520))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (select (select (store (let ((.cse1 (store |c_#memory_int| |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2521))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse0 v_ArrVal_2503))) |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2508) (select (select (store (store .cse3 .cse2 v_ArrVal_2504) |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2507) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store .cse4 .cse2 v_ArrVal_2506) |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| v_ArrVal_2509) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) |c_ULTIMATE.start_main_~data~0#1|) (not (< |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base_20|) 0)))))) is different from false [2022-11-18 20:55:33,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560236221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:33,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:55:33,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 59 [2022-11-18 20:55:33,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751412134] [2022-11-18 20:55:33,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:33,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:55:33,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:55:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=4181, Unknown=3, NotChecked=262, Total=4692 [2022-11-18 20:55:33,896 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 59 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 50 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:55:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:38,738 INFO L93 Difference]: Finished difference Result 202 states and 226 transitions. [2022-11-18 20:55:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:55:38,742 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 50 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 51 [2022-11-18 20:55:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:38,744 INFO L225 Difference]: With dead ends: 202 [2022-11-18 20:55:38,744 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 20:55:38,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=622, Invalid=7573, Unknown=3, NotChecked=358, Total=8556 [2022-11-18 20:55:38,747 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 639 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:38,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1586 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:55:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 20:55:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 123. [2022-11-18 20:55:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 116 states have internal predecessors, (128), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:55:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2022-11-18 20:55:38,753 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 51 [2022-11-18 20:55:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2022-11-18 20:55:38,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 50 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:55:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2022-11-18 20:55:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:55:38,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:38,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:38,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:55:38,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:55:38,962 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 106624317, now seen corresponding path program 1 times [2022-11-18 20:55:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:38,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675835104] [2022-11-18 20:55:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:38,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:55:39,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:39,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675835104] [2022-11-18 20:55:39,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675835104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:39,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:39,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:55:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31712650] [2022-11-18 20:55:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:39,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:55:39,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:55:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:55:39,291 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 11 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:55:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:39,808 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2022-11-18 20:55:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:55:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-18 20:55:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:39,810 INFO L225 Difference]: With dead ends: 200 [2022-11-18 20:55:39,810 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 20:55:39,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:39,811 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 182 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:39,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 679 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:55:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 20:55:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 124. [2022-11-18 20:55:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 117 states have internal predecessors, (130), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:55:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2022-11-18 20:55:39,816 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 51 [2022-11-18 20:55:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:39,816 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2022-11-18 20:55:39,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:55:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2022-11-18 20:55:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:55:39,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:39,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:39,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:55:39,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 106624318, now seen corresponding path program 1 times [2022-11-18 20:55:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:39,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975370611] [2022-11-18 20:55:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:55:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975370611] [2022-11-18 20:55:40,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975370611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:40,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:40,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:55:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509037327] [2022-11-18 20:55:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:55:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:55:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:55:40,387 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:55:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:40,878 INFO L93 Difference]: Finished difference Result 182 states and 204 transitions. [2022-11-18 20:55:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:55:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-18 20:55:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:40,880 INFO L225 Difference]: With dead ends: 182 [2022-11-18 20:55:40,880 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 20:55:40,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:55:40,881 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 221 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:40,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 726 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:55:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 20:55:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 120. [2022-11-18 20:55:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 113 states have internal predecessors, (125), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:55:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2022-11-18 20:55:40,887 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 51 [2022-11-18 20:55:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:40,887 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2022-11-18 20:55:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:55:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2022-11-18 20:55:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:55:40,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:40,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:40,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:55:40,889 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:40,890 INFO L85 PathProgramCache]: Analyzing trace with hash -613243961, now seen corresponding path program 1 times [2022-11-18 20:55:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:40,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609637072] [2022-11-18 20:55:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:55:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:41,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609637072] [2022-11-18 20:55:41,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609637072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:41,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653143740] [2022-11-18 20:55:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:41,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:41,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:41,204 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:41,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:55:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:41,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:55:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:41,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:55:41,542 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2921 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_2921))) (not (= |node_create_~temp~0#1.base| 0)))) is different from true [2022-11-18 20:55:41,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:55:41,595 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_2922 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_2922))) (not (= |node_create_~temp~0#1.base| 0)))) is different from true [2022-11-18 20:55:41,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:55:41,670 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (not (= |node_create_~temp~0#1.base| 0)) (exists ((v_ArrVal_2923 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_2923))))) is different from true [2022-11-18 20:55:41,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:55:41,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:55:41,743 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:55:41,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:55:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 18 not checked. [2022-11-18 20:55:41,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:55:42,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653143740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:55:42,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:55:42,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2022-11-18 20:55:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342724427] [2022-11-18 20:55:42,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:55:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:55:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2022-11-18 20:55:42,235 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 15 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:55:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:42,501 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2022-11-18 20:55:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:55:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 15 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2022-11-18 20:55:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:42,503 INFO L225 Difference]: With dead ends: 116 [2022-11-18 20:55:42,503 INFO L226 Difference]: Without dead ends: 116 [2022-11-18 20:55:42,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=277, Unknown=3, NotChecked=114, Total=506 [2022-11-18 20:55:42,504 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 372 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 279 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 176 Invalid, 0 Unknown, 269 Unchecked, 0.2s Time] [2022-11-18 20:55:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-18 20:55:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-18 20:55:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 109 states have internal predecessors, (119), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:55:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2022-11-18 20:55:42,508 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 53 [2022-11-18 20:55:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:42,508 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2022-11-18 20:55:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 15 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:55:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2022-11-18 20:55:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:55:42,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:42,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:42,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:55:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:42,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2022-11-18 20:55:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1524453912, now seen corresponding path program 1 times [2022-11-18 20:55:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:42,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446112219] [2022-11-18 20:55:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:55:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:55:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:55:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:55:44,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:44,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446112219] [2022-11-18 20:55:44,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446112219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:44,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863835569] [2022-11-18 20:55:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:44,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:55:44,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:44,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:55:44,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3514c101-61e6-49bf-962a-8ddda38dba82/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:55:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:44,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 20:55:44,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:55:45,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:55:45,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:55:45,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:55:45,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:45,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-18 20:55:45,454 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-18 20:55:45,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:55:45,964 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:55:45,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 37 [2022-11-18 20:55:45,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:45,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 20:55:46,087 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:55:46,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 83 [2022-11-18 20:55:46,125 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:55:46,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 72 [2022-11-18 20:55:46,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2022-11-18 20:55:46,486 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:55:46,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 26 [2022-11-18 20:55:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:55:46,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:46,531 INFO L321 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2022-11-18 20:55:46,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 20:55:46,541 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3117 (Array Int Int)) (v_ArrVal_3118 (Array Int Int))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3117))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3118) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-18 20:55:46,550 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3114 (Array Int Int)) (v_ArrVal_3117 (Array Int Int)) (v_ArrVal_3118 (Array Int Int))) (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3117))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_3114) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3118) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-18 20:55:48,806 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3114 (Array Int Int)) (v_ArrVal_3117 (Array Int Int)) (v_ArrVal_3118 (Array Int Int))) (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_#t~mem10#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_#t~mem10#1.base|) |c_ULTIMATE.start_sll_circular_insert_#t~mem10#1.offset| |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3117))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_#t~mem10#1.base| v_ArrVal_3114) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3118) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-18 20:55:48,817 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3114 (Array Int Int)) (v_ArrVal_3117 (Array Int Int)) (v_ArrVal_3118 (Array Int Int))) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3117))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3114) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base| v_ArrVal_3118) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_sll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-18 20:55:48,828 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3114 (Array Int Int)) (v_ArrVal_3117 (Array Int Int)) (v_ArrVal_3118 (Array Int Int))) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|))) (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_circular_insert_~head#1.base|) |c_ULTIMATE.start_sll_circular_insert_~head#1.offset|) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base|)) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base| v_ArrVal_3117))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3114) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base| v_ArrVal_3118) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_sll_circular_insert_#t~ret9#1.base|)) is different from false [2022-11-18 20:55:48,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:55:48,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5900 treesize of output 5623 [2022-11-18 20:55:48,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:55:48,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5612 treesize of output 5476 [2022-11-18 20:55:48,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5468 treesize of output 5404 [2022-11-18 20:55:49,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5404 treesize of output 5372 [2022-11-18 21:05:38,213 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 5525 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)