./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- 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-5e519f3 [2022-11-02 21:07:52,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:52,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:52,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:52,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:52,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:52,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:52,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:52,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:52,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:52,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:52,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:52,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:52,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:52,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:52,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:52,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:52,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:52,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:52,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:52,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:52,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:52,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:52,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:52,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:52,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:52,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:52,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:52,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:52,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:52,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:52,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:52,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:52,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:52,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:52,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:52,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:52,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:52,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:52,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:52,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:52,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:07:53,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:53,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:53,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:53,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:53,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:53,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:53,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:53,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:53,005 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:53,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:53,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:53,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:53,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:53,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:53,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:53,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:53,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:53,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:53,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:53,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:53,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:53,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:53,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:53,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:53,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:53,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:53,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:53,012 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:53,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:53,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:53,012 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-02 21:07:53,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:53,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:53,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:53,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:53,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:53,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-02 21:07:53,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/9c7913daf/b4771eb1c82a413c83e6ab3ac125ae05/FLAG26ff09dea [2022-11-02 21:07:54,068 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:54,068 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-02 21:07:54,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/9c7913daf/b4771eb1c82a413c83e6ab3ac125ae05/FLAG26ff09dea [2022-11-02 21:07:54,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/9c7913daf/b4771eb1c82a413c83e6ab3ac125ae05 [2022-11-02 21:07:54,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:54,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:54,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:54,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:54,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:54,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535384a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54, skipping insertion in model container [2022-11-02 21:07:54,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:54,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:54,614 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-02 21:07:54,619 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-02 21:07:55,273 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,274 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,275 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,276 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,277 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,291 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,291 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,293 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,294 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,296 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,297 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,298 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,299 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 21:07:55,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 21:07:55,512 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 21:07:55,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 21:07:55,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 21:07:55,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 21:07:55,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 21:07:55,524 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 21:07:55,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 21:07:55,528 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 21:07:55,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:55,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:55,647 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-02 21:07:55,648 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-02 21:07:55,709 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,709 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,710 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,710 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,711 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,719 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,720 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,721 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,722 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,723 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,724 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,724 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,725 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:07:55,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 21:07:55,746 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 21:07:55,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 21:07:55,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 21:07:55,750 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 21:07:55,750 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 21:07:55,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 21:07:55,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 21:07:55,752 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 21:07:55,753 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 21:07:55,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:55,948 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:55,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55 WrapperNode [2022-11-02 21:07:55,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:55,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:55,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:55,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:55,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,076 INFO L138 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2022-11-02 21:07:56,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:56,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:56,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:56,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:56,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:56,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:56,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:56,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:56,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (1/1) ... [2022-11-02 21:07:56,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:56,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:56,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:56,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:07:56,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:07:56,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:07:56,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:07:56,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:56,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:56,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:56,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 21:07:56,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 21:07:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:07:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-02 21:07:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-02 21:07:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 21:07:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 21:07:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:07:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:56,554 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:56,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:56,745 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:56,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:56,752 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:07:56,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:56 BoogieIcfgContainer [2022-11-02 21:07:56,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:56,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:56,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:56,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:56,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:54" (1/3) ... [2022-11-02 21:07:56,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8a914f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:56, skipping insertion in model container [2022-11-02 21:07:56,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:55" (2/3) ... [2022-11-02 21:07:56,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8a914f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:56, skipping insertion in model container [2022-11-02 21:07:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:56" (3/3) ... [2022-11-02 21:07:56,763 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-02 21:07:56,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:56,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:56,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:56,851 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d876ad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:56,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 21:07:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:07:56,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:56,866 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:56,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-02 21:07:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:56,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040808527] [2022-11-02 21:07:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:07:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:07:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:07:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:07:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:07:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:07:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:57,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040808527] [2022-11-02 21:07:57,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040808527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:57,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:57,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200526769] [2022-11-02 21:07:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:07:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:07:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:57,350 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:07:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:57,398 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-02 21:07:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:07:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-11-02 21:07:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:57,412 INFO L225 Difference]: With dead ends: 117 [2022-11-02 21:07:57,412 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 21:07:57,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:57,430 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:57,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 21:07:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-02 21:07:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:07:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-02 21:07:57,486 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-02 21:07:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:57,487 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-02 21:07:57,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:07:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-02 21:07:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:07:57,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:57,491 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:57,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:57,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-02 21:07:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870029941] [2022-11-02 21:07:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:07:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:07:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:07:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:07:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:07:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:07:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:58,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870029941] [2022-11-02 21:07:58,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870029941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:58,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504584741] [2022-11-02 21:07:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:58,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:58,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:58,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:07:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:07:58,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:07:59,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:07:59,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504584741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:59,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:59,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2022-11-02 21:07:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672751822] [2022-11-02 21:07:59,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:07:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:07:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:07:59,535 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:07:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:59,873 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-02 21:07:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:07:59,874 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2022-11-02 21:07:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:59,880 INFO L225 Difference]: With dead ends: 58 [2022-11-02 21:07:59,880 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:07:59,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:07:59,883 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:59,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 482 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:07:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:07:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-02 21:07:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:07:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-02 21:07:59,907 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-02 21:07:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:59,908 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-02 21:07:59,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 21:07:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-02 21:07:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:07:59,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:59,910 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:59,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:00,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-02 21:08:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:00,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071416853] [2022-11-02 21:08:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:00,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:08:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:08:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:08:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:08:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:08:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:08:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071416853] [2022-11-02 21:08:00,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071416853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:00,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696015623] [2022-11-02 21:08:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:08:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:08:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:00,729 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 21:08:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:00,934 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2022-11-02 21:08:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-11-02 21:08:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:00,942 INFO L225 Difference]: With dead ends: 83 [2022-11-02 21:08:00,943 INFO L226 Difference]: Without dead ends: 81 [2022-11-02 21:08:00,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:00,946 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:00,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 377 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-02 21:08:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2022-11-02 21:08:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:08:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-02 21:08:00,962 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 42 [2022-11-02 21:08:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:00,962 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-02 21:08:00,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-02 21:08:00,963 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-02 21:08:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 21:08:00,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:00,964 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:08:00,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1722148702, now seen corresponding path program 1 times [2022-11-02 21:08:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:00,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101198175] [2022-11-02 21:08:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:00,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:08:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:08:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:08:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:08:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 21:08:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:08:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:08:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101198175] [2022-11-02 21:08:01,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101198175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:01,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:01,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906126577] [2022-11-02 21:08:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:01,122 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:08:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:01,149 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-11-02 21:08:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-11-02 21:08:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:01,152 INFO L225 Difference]: With dead ends: 113 [2022-11-02 21:08:01,152 INFO L226 Difference]: Without dead ends: 68 [2022-11-02 21:08:01,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:01,154 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:01,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-02 21:08:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-11-02 21:08:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:08:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2022-11-02 21:08:01,167 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 43 [2022-11-02 21:08:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:01,167 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2022-11-02 21:08:01,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:08:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2022-11-02 21:08:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:08:01,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:01,169 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:01,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:08:01,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:01,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 982661572, now seen corresponding path program 1 times [2022-11-02 21:08:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:01,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429539896] [2022-11-02 21:08:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:08:01,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:08:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:08:01,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:08:01,360 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:08:01,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:08:01,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:08:01,366 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 21:08:01,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:08:01,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:08:01 BoogieIcfgContainer [2022-11-02 21:08:01,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:08:01,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:08:01,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:08:01,436 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:08:01,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:56" (3/4) ... [2022-11-02 21:08:01,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:08:01,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:08:01,441 INFO L158 Benchmark]: Toolchain (without parser) took 7205.77ms. Allocated memory was 121.6MB in the beginning and 203.4MB in the end (delta: 81.8MB). Free memory was 73.3MB in the beginning and 62.8MB in the end (delta: 10.5MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,441 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 70.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:01,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1710.18ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 73.1MB in the beginning and 73.1MB in the end (delta: 1.5kB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.02ms. Allocated memory is still 148.9MB. Free memory was 73.1MB in the beginning and 110.1MB in the end (delta: -37.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,445 INFO L158 Benchmark]: Boogie Preprocessor took 70.07ms. Allocated memory is still 148.9MB. Free memory was 110.1MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,445 INFO L158 Benchmark]: RCFGBuilder took 606.13ms. Allocated memory is still 148.9MB. Free memory was 108.1MB in the beginning and 88.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,445 INFO L158 Benchmark]: TraceAbstraction took 4678.41ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 87.9MB in the beginning and 62.8MB in the end (delta: 25.1MB). Peak memory consumption was 79.3MB. Max. memory is 16.1GB. [2022-11-02 21:08:01,448 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 203.4MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:01,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 70.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1710.18ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 73.1MB in the beginning and 73.1MB in the end (delta: 1.5kB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 127.02ms. Allocated memory is still 148.9MB. Free memory was 73.1MB in the beginning and 110.1MB in the end (delta: -37.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.07ms. Allocated memory is still 148.9MB. Free memory was 110.1MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.13ms. Allocated memory is still 148.9MB. Free memory was 108.1MB in the beginning and 88.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4678.41ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 87.9MB in the beginning and 62.8MB in the end (delta: 25.1MB). Peak memory consumption was 79.3MB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 203.4MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=1] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=1] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=1, s={6:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=0, i=0, n=1, s={6:0}, sp={6:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=0, n=1, s={6:0}, sp={6:0}] [L5873] i++ VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5873] COND FALSE !(i < n) VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5876] return s; VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=1] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=1] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=1, num_uint64s=0, rem=1] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 1057 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 797 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 289 IncrementalHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 260 mSDtfsCounter, 289 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 14 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 208/244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:08:01,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- 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-5e519f3 [2022-11-02 21:08:03,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:03,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:03,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:03,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:03,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:03,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:03,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:03,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:03,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:03,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:03,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:03,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:03,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:03,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:03,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:03,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:03,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:03,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:03,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:03,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:03,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:03,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:03,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:03,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:03,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:03,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:03,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:03,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:03,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:03,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:03,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:03,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:03,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:03,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:03,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:03,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:03,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:03,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:03,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:03,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:03,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:08:03,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:03,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:03,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:03,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:03,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:03,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:03,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:03,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:03,976 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:03,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:03,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:03,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:03,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:03,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:03,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:08:03,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:08:03,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:08:03,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:03,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:03,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:03,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:03,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:03,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:03,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:03,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:03,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:03,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:03,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:08:03,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:08:03,982 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:08:03,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:08:03,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:03,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:08:03,983 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-02 21:08:04,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:04,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:04,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:04,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:04,424 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:04,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-02 21:08:04,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/f04796d8b/e95cf1b56c314632b7ac288becc9507c/FLAG3fee9fbd1 [2022-11-02 21:08:05,274 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:05,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-02 21:08:05,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/f04796d8b/e95cf1b56c314632b7ac288becc9507c/FLAG3fee9fbd1 [2022-11-02 21:08:05,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/data/f04796d8b/e95cf1b56c314632b7ac288becc9507c [2022-11-02 21:08:05,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:05,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:05,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:05,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:05,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:05,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:05" (1/1) ... [2022-11-02 21:08:05,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433d3556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:05, skipping insertion in model container [2022-11-02 21:08:05,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:05" (1/1) ... [2022-11-02 21:08:05,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:05,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:05,835 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-02 21:08:05,841 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-02 21:08:06,861 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,862 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,863 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,864 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,865 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,883 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,890 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,893 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,894 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,896 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,898 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:06,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 21:08:07,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 21:08:07,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 21:08:07,123 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 21:08:07,124 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 21:08:07,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 21:08:07,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 21:08:07,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 21:08:07,140 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 21:08:07,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 21:08:07,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:07,257 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 21:08:07,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:07,309 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-02 21:08:07,310 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-02 21:08:07,358 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,359 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,359 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,360 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,361 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,372 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,373 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,375 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,375 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,377 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,378 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,379 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,379 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 21:08:07,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 21:08:07,406 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 21:08:07,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 21:08:07,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 21:08:07,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 21:08:07,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 21:08:07,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 21:08:07,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 21:08:07,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 21:08:07,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:07,443 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:07,459 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-02 21:08:07,460 WARN L230 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_da9e3913-b5cf-413a-9ece-df7a2f620cec/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-02 21:08:07,544 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,545 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,545 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,546 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,547 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,558 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,563 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,565 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,566 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,567 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,568 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,569 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,569 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 21:08:07,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 21:08:07,612 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 21:08:07,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 21:08:07,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 21:08:07,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 21:08:07,620 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 21:08:07,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 21:08:07,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 21:08:07,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 21:08:07,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 21:08:07,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:07,985 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:07,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07 WrapperNode [2022-11-02 21:08:07,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:07,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:07,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:07,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:07,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,102 INFO L138 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2022-11-02 21:08:08,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:08,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:08,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:08,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:08,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:08,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:08,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:08,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:08,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (1/1) ... [2022-11-02 21:08:08,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:08,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:08,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:08,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:08:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:08:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:08:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:08:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:08:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 21:08:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 21:08:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 21:08:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:08:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-02 21:08:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 21:08:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-02 21:08:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-02 21:08:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-02 21:08:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-02 21:08:08,649 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:08,651 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:09,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:09,011 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:09,011 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:08:09,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:09 BoogieIcfgContainer [2022-11-02 21:08:09,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:09,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:09,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:09,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:09,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:05" (1/3) ... [2022-11-02 21:08:09,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3727ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:09, skipping insertion in model container [2022-11-02 21:08:09,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:07" (2/3) ... [2022-11-02 21:08:09,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3727ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:09, skipping insertion in model container [2022-11-02 21:08:09,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:09" (3/3) ... [2022-11-02 21:08:09,021 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-02 21:08:09,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:09,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:09,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:09,106 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3cefc38c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:09,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 21:08:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:08:09,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,125 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:09,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-02 21:08:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:09,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338653899] [2022-11-02 21:08:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:09,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:09,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:08:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:08:09,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:08:09,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:09,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:09,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338653899] [2022-11-02 21:08:09,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338653899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:09,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:09,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473489903] [2022-11-02 21:08:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:09,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:08:09,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:09,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:08:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:08:09,493 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 21:08:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:09,543 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-02 21:08:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:08:09,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-11-02 21:08:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:09,556 INFO L225 Difference]: With dead ends: 117 [2022-11-02 21:08:09,556 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 21:08:09,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:08:09,564 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:09,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 21:08:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-02 21:08:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-02 21:08:09,614 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-02 21:08:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:09,615 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-02 21:08:09,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 21:08:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-02 21:08:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:08:09,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:09,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:09,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-02 21:08:09,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:09,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481623235] [2022-11-02 21:08:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:09,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:09,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:08:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:10,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:08:10,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:10,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:10,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:10,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481623235] [2022-11-02 21:08:10,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481623235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:10,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:10,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:08:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484985609] [2022-11-02 21:08:10,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:08:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:08:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:10,316 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 21:08:10,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:10,601 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-02 21:08:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:10,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2022-11-02 21:08:10,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:10,603 INFO L225 Difference]: With dead ends: 58 [2022-11-02 21:08:10,603 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:08:10,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:10,606 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:10,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 252 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:08:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-02 21:08:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-02 21:08:10,629 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-02 21:08:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:10,631 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-02 21:08:10,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-02 21:08:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-02 21:08:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:08:10,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:10,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:10,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:10,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-02 21:08:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:10,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750192002] [2022-11-02 21:08:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:10,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:10,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:08:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:11,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:11,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:08:11,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:11,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750192002] [2022-11-02 21:08:11,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750192002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:11,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:11,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:08:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393184744] [2022-11-02 21:08:11,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:08:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:08:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:11,922 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 21:08:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:12,328 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-11-02 21:08:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:12,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2022-11-02 21:08:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:12,331 INFO L225 Difference]: With dead ends: 62 [2022-11-02 21:08:12,331 INFO L226 Difference]: Without dead ends: 60 [2022-11-02 21:08:12,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:08:12,333 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:12,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 480 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-02 21:08:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-02 21:08:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-02 21:08:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-11-02 21:08:12,347 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2022-11-02 21:08:12,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:12,347 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-11-02 21:08:12,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 21:08:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-11-02 21:08:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:08:12,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:12,354 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:12,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 21:08:12,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:12,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2022-11-02 21:08:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:12,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908711082] [2022-11-02 21:08:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:12,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:12,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:12,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:08:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:12,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 21:08:12,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:12,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908711082] [2022-11-02 21:08:12,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908711082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:12,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:12,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977566411] [2022-11-02 21:08:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:12,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:12,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:12,915 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:08:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:13,068 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-02 21:08:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:08:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2022-11-02 21:08:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:13,070 INFO L225 Difference]: With dead ends: 66 [2022-11-02 21:08:13,070 INFO L226 Difference]: Without dead ends: 64 [2022-11-02 21:08:13,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:13,071 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 249 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-02 21:08:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-02 21:08:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-11-02 21:08:13,098 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2022-11-02 21:08:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:13,100 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-11-02 21:08:13,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-02 21:08:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-11-02 21:08:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:08:13,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:13,104 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1] [2022-11-02 21:08:13,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:13,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:13,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2022-11-02 21:08:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:13,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148962683] [2022-11-02 21:08:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:13,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:13,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:13,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:08:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:08:13,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:13,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 21:08:13,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:13,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148962683] [2022-11-02 21:08:13,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148962683] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-11-02 21:08:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740262978] [2022-11-02 21:08:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:13,911 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 21:08:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:14,067 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-02 21:08:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:14,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2022-11-02 21:08:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:14,069 INFO L225 Difference]: With dead ends: 107 [2022-11-02 21:08:14,069 INFO L226 Difference]: Without dead ends: 79 [2022-11-02 21:08:14,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:14,070 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:14,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 185 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-02 21:08:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-11-02 21:08:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 21:08:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-02 21:08:14,094 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2022-11-02 21:08:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:14,095 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-02 21:08:14,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 21:08:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-02 21:08:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 21:08:14,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:14,106 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1] [2022-11-02 21:08:14,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:14,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2022-11-02 21:08:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913189517] [2022-11-02 21:08:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:14,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:14,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:08:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:08:14,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:14,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 21:08:14,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:14,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913189517] [2022-11-02 21:08:14,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913189517] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:14,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:14,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-02 21:08:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070709556] [2022-11-02 21:08:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:14,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:14,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:14,956 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 21:08:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:15,001 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2022-11-02 21:08:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2022-11-02 21:08:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:15,004 INFO L225 Difference]: With dead ends: 131 [2022-11-02 21:08:15,004 INFO L226 Difference]: Without dead ends: 78 [2022-11-02 21:08:15,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:15,006 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:15,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:08:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-02 21:08:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-02 21:08:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 21:08:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-11-02 21:08:15,026 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2022-11-02 21:08:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:15,026 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-11-02 21:08:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 21:08:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-11-02 21:08:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 21:08:15,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:15,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:15,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:15,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2022-11-02 21:08:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:15,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833080590] [2022-11-02 21:08:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:15,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:15,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:15,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:08:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:08:15,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:15,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 21:08:16,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833080590] [2022-11-02 21:08:16,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833080590] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:16,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:16,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2022-11-02 21:08:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802788396] [2022-11-02 21:08:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:16,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:16,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:16,039 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 21:08:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:16,184 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2022-11-02 21:08:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:08:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2022-11-02 21:08:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:16,185 INFO L225 Difference]: With dead ends: 100 [2022-11-02 21:08:16,185 INFO L226 Difference]: Without dead ends: 65 [2022-11-02 21:08:16,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:16,186 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:16,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 262 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-02 21:08:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-02 21:08:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-11-02 21:08:16,204 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2022-11-02 21:08:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:16,204 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-11-02 21:08:16,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 21:08:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-11-02 21:08:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:08:16,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:16,206 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:16,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:16,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2022-11-02 21:08:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:16,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342157994] [2022-11-02 21:08:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:16,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:08:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:08:16,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:16,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:08:17,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342157994] [2022-11-02 21:08:17,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342157994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:17,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:17,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-02 21:08:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033441649] [2022-11-02 21:08:17,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:17,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:08:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:08:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:17,341 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:17,576 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2022-11-02 21:08:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:08:17,577 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2022-11-02 21:08:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:17,578 INFO L225 Difference]: With dead ends: 122 [2022-11-02 21:08:17,578 INFO L226 Difference]: Without dead ends: 69 [2022-11-02 21:08:17,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:08:17,579 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:17,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 475 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-02 21:08:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-02 21:08:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-02 21:08:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-11-02 21:08:17,593 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2022-11-02 21:08:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:17,594 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-11-02 21:08:17,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-11-02 21:08:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 21:08:17,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:17,595 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1] [2022-11-02 21:08:17,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:17,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:17,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2022-11-02 21:08:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:17,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524877774] [2022-11-02 21:08:17,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:17,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:17,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:17,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:08:18,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:08:18,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:18,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:08:18,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:18,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:08:19,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524877774] [2022-11-02 21:08:19,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524877774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:19,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:19,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-11-02 21:08:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325301867] [2022-11-02 21:08:19,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:19,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:08:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:08:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:08:19,414 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:20,395 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-11-02 21:08:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:08:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2022-11-02 21:08:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:20,397 INFO L225 Difference]: With dead ends: 130 [2022-11-02 21:08:20,397 INFO L226 Difference]: Without dead ends: 77 [2022-11-02 21:08:20,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:20,398 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:20,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-02 21:08:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-02 21:08:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-02 21:08:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 21:08:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-02 21:08:20,412 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2022-11-02 21:08:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:20,413 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-02 21:08:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-02 21:08:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 21:08:20,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:20,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 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, 1, 1, 1, 1] [2022-11-02 21:08:20,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2022-11-02 21:08:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424471926] [2022-11-02 21:08:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:08:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:20,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:20,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:08:20,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 21:08:20,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:20,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:08:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 21:08:21,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-02 21:08:21,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424471926] [2022-11-02 21:08:21,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424471926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:21,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:21,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-02 21:08:21,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657787196] [2022-11-02 21:08:21,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:21,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:08:21,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:08:21,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:08:21,622 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-02 21:08:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:22,838 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2022-11-02 21:08:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:22,839 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2022-11-02 21:08:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:22,841 INFO L225 Difference]: With dead ends: 113 [2022-11-02 21:08:22,841 INFO L226 Difference]: Without dead ends: 85 [2022-11-02 21:08:22,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:08:22,843 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:22,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 407 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 145 Invalid, 0 Unknown, 20 Unchecked, 0.8s Time] [2022-11-02 21:08:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-02 21:08:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-11-02 21:08:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 21:08:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2022-11-02 21:08:22,863 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2022-11-02 21:08:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:22,864 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2022-11-02 21:08:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-02 21:08:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2022-11-02 21:08:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 21:08:22,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:22,866 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:22,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:23,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2022-11-02 21:08:23,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:23,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570057386] [2022-11-02 21:08:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:23,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:23,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:23,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:08:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:08:23,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:08:24,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-02 21:08:26,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570057386] [2022-11-02 21:08:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570057386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:26,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:26,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2022-11-02 21:08:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535299410] [2022-11-02 21:08:26,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:08:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:08:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:08:26,379 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:26,794 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-11-02 21:08:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:08:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2022-11-02 21:08:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:26,796 INFO L225 Difference]: With dead ends: 142 [2022-11-02 21:08:26,797 INFO L226 Difference]: Without dead ends: 84 [2022-11-02 21:08:26,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:08:26,798 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:26,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 736 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-02 21:08:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-02 21:08:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-02 21:08:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 21:08:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2022-11-02 21:08:26,813 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2022-11-02 21:08:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:26,813 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2022-11-02 21:08:26,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-02 21:08:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2022-11-02 21:08:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-02 21:08:26,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:26,824 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:26,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:27,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:27,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2022-11-02 21:08:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:27,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889567546] [2022-11-02 21:08:27,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:27,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:27,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:27,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:27,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:08:27,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:08:27,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:28,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-02 21:08:28,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:28,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-11-02 21:08:28,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-02 21:08:29,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:29,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 21:08:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:29,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-02 21:08:30,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-02 21:08:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:30,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2022-11-02 21:08:31,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:31,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 76 [2022-11-02 21:08:32,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:32,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2022-11-02 21:08:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:33,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2022-11-02 21:08:38,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:38,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:38,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2022-11-02 21:08:45,457 INFO L356 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2022-11-02 21:08:45,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 29 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 16 case distinctions, treesize of input 127 treesize of output 61 [2022-11-02 21:08:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:08:45,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:46,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889567546] [2022-11-02 21:08:46,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889567546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1691930456] [2022-11-02 21:08:46,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 21:08:46,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 21:08:46,715 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 21:08:46,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-02 21:08:48,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:08:48,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:48,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-02 21:08:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:48,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-11-02 21:08:49,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:49,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-02 21:08:50,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:50,276 INFO L356 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-02 21:08:50,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2022-11-02 21:08:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:51,119 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:51,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2022-11-02 21:08:51,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:51,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:51,969 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:51,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2022-11-02 21:08:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:52,959 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:52,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 72 [2022-11-02 21:08:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:54,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:54,118 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:54,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84 [2022-11-02 21:08:55,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:55,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:55,416 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:55,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 98 [2022-11-02 21:08:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:56,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:08:56,571 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 21:08:56,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 102 [2022-11-02 21:09:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:09:04,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:09:04,095 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-02 21:09:04,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 57 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 132 treesize of output 183 [2022-11-02 21:09:13,210 INFO L356 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-11-02 21:09:13,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 29 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 34 case distinctions, treesize of input 134 treesize of output 64 [2022-11-02 21:09:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:09:13,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:13,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1691930456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:13,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:13,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2022-11-02 21:09:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070474220] [2022-11-02 21:09:13,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-02 21:09:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-02 21:09:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2022-11-02 21:09:13,308 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-02 21:09:37,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:39,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:42,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:45,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:47,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:51,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:52,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:09:59,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:10:02,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:10:05,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:10:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:14,381 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-11-02 21:10:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 21:10:14,382 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) Word has length 87 [2022-11-02 21:10:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:14,384 INFO L225 Difference]: With dead ends: 165 [2022-11-02 21:10:14,384 INFO L226 Difference]: Without dead ends: 161 [2022-11-02 21:10:14,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 97 SyntacticMatches, 18 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4046 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=854, Invalid=10918, Unknown=0, NotChecked=0, Total=11772 [2022-11-02 21:10:14,389 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 181 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:14,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1499 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2365 Invalid, 0 Unknown, 388 Unchecked, 51.0s Time] [2022-11-02 21:10:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-02 21:10:14,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 151. [2022-11-02 21:10:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 108 states have (on average 1.0833333333333333) internal successors, (117), 109 states have internal predecessors, (117), 27 states have call successors, (27), 18 states have call predecessors, (27), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-02 21:10:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2022-11-02 21:10:14,434 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 87 [2022-11-02 21:10:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:14,435 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2022-11-02 21:10:14,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-02 21:10:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2022-11-02 21:10:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 21:10:14,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:14,437 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:14,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:14,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:14,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 21:10:14,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1360942848, now seen corresponding path program 1 times [2022-11-02 21:10:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:14,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964330683] [2022-11-02 21:10:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:14,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:14,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:14,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:14,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:10:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:10:15,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-02 21:10:15,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:15,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:15,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964330683] [2022-11-02 21:10:15,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964330683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599366167] [2022-11-02 21:10:15,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:15,623 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 21:10:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,839 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-11-02 21:10:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2022-11-02 21:10:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,842 INFO L225 Difference]: With dead ends: 191 [2022-11-02 21:10:15,842 INFO L226 Difference]: Without dead ends: 147 [2022-11-02 21:10:15,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:15,843 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 145 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-11-02 21:10:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-02 21:10:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-02 21:10:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 106 states have internal predecessors, (110), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:10:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2022-11-02 21:10:15,902 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 89 [2022-11-02 21:10:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,903 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2022-11-02 21:10:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-02 21:10:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2022-11-02 21:10:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 21:10:15,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,905 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:16,114 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:16,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -250047413, now seen corresponding path program 3 times [2022-11-02 21:10:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285720832] [2022-11-02 21:10:16,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:10:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:16,116 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:16,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:10:17,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-02 21:10:17,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:17,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:10:17,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 41 proven. 87 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:10:18,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-02 21:10:21,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:21,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285720832] [2022-11-02 21:10:21,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285720832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:21,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:21,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 38 [2022-11-02 21:10:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669413701] [2022-11-02 21:10:21,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:21,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 21:10:21,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 21:10:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:10:21,676 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-02 21:10:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:34,236 INFO L93 Difference]: Finished difference Result 221 states and 252 transitions. [2022-11-02 21:10:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:10:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 89 [2022-11-02 21:10:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:34,241 INFO L225 Difference]: With dead ends: 221 [2022-11-02 21:10:34,241 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 21:10:34,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=658, Invalid=2648, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 21:10:34,244 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 441 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:34,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 842 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1119 Invalid, 0 Unknown, 95 Unchecked, 4.1s Time] [2022-11-02 21:10:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 21:10:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-02 21:10:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 127 states have (on average 1.047244094488189) internal successors, (133), 128 states have internal predecessors, (133), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:10:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 181 transitions. [2022-11-02 21:10:34,301 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 181 transitions. Word has length 89 [2022-11-02 21:10:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:34,302 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 181 transitions. [2022-11-02 21:10:34,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-02 21:10:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 181 transitions. [2022-11-02 21:10:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:10:34,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:34,304 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:34,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:34,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:34,505 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -59588295, now seen corresponding path program 4 times [2022-11-02 21:10:34,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956331817] [2022-11-02 21:10:34,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:10:34,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:34,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:34,507 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:34,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:10:34,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:10:34,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:34,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 21:10:34,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 38 proven. 269 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:10:37,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 9 proven. 269 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:10:43,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:43,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956331817] [2022-11-02 21:10:43,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956331817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:43,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:43,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 56 [2022-11-02 21:10:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521063596] [2022-11-02 21:10:43,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-02 21:10:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-02 21:10:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=2566, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 21:10:43,352 INFO L87 Difference]: Start difference. First operand 169 states and 181 transitions. Second operand has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-02 21:10:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:49,809 INFO L93 Difference]: Finished difference Result 231 states and 255 transitions. [2022-11-02 21:10:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:10:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) Word has length 103 [2022-11-02 21:10:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:49,811 INFO L225 Difference]: With dead ends: 231 [2022-11-02 21:10:49,811 INFO L226 Difference]: Without dead ends: 195 [2022-11-02 21:10:49,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=769, Invalid=3391, Unknown=0, NotChecked=0, Total=4160 [2022-11-02 21:10:49,813 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 659 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:49,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1880 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1496 Invalid, 0 Unknown, 170 Unchecked, 5.2s Time] [2022-11-02 21:10:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-02 21:10:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 171. [2022-11-02 21:10:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.0465116279069768) internal successors, (135), 130 states have internal predecessors, (135), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:10:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2022-11-02 21:10:49,858 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 103 [2022-11-02 21:10:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:49,858 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2022-11-02 21:10:49,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-02 21:10:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2022-11-02 21:10:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 21:10:49,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:49,860 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:49,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:50,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:50,066 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 609255285, now seen corresponding path program 1 times [2022-11-02 21:10:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:50,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794046008] [2022-11-02 21:10:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:50,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:50,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:50,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:10:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 21:10:50,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:52,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:10:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:10:52,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2022-11-02 21:10:58,784 INFO L356 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-02 21:10:58,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 64 treesize of output 31 [2022-11-02 21:10:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 54 proven. 96 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:10:58,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:59,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794046008] [2022-11-02 21:10:59,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794046008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678386036] [2022-11-02 21:10:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 21:10:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 21:10:59,666 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 21:10:59,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-02 21:11:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:00,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:11:00,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:02,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:11:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:02,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2022-11-02 21:11:07,403 INFO L356 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-02 21:11:07,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 64 treesize of output 31 [2022-11-02 21:11:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 60 proven. 84 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:11:07,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:07,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678386036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:07,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:07,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 42 [2022-11-02 21:11:07,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480315072] [2022-11-02 21:11:07,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 21:11:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 21:11:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2037, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 21:11:07,490 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-02 21:11:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:26,549 INFO L93 Difference]: Finished difference Result 218 states and 230 transitions. [2022-11-02 21:11:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:11:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 108 [2022-11-02 21:11:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:26,551 INFO L225 Difference]: With dead ends: 218 [2022-11-02 21:11:26,551 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 21:11:26,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 159 SyntacticMatches, 23 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=323, Invalid=3583, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 21:11:26,553 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 276 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:26,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1087 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1172 Invalid, 0 Unknown, 131 Unchecked, 16.6s Time] [2022-11-02 21:11:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 21:11:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-02 21:11:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 131 states have (on average 1.0458015267175573) internal successors, (137), 132 states have internal predecessors, (137), 26 states have call successors, (26), 18 states have call predecessors, (26), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 21:11:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 185 transitions. [2022-11-02 21:11:26,608 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 185 transitions. Word has length 108 [2022-11-02 21:11:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 185 transitions. [2022-11-02 21:11:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-02 21:11:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 185 transitions. [2022-11-02 21:11:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 21:11:26,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:26,610 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:26,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:26,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:27,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 21:11:27,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash -55356389, now seen corresponding path program 5 times [2022-11-02 21:11:27,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:27,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637846617] [2022-11-02 21:11:27,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:11:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:27,029 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:27,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da9e3913-b5cf-413a-9ece-df7a2f620cec/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:11:30,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-11-02 21:11:30,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:30,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-02 21:11:30,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:30,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-11-02 21:11:30,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-02 21:11:31,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-02 21:11:31,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-11-02 21:11:32,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-11-02 21:11:32,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2022-11-02 21:11:33,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2022-11-02 21:11:34,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 95 [2022-11-02 21:11:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 100 [2022-11-02 21:11:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:35,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 114 [2022-11-02 21:11:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:36,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 126 [2022-11-02 21:11:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:37,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 140 [2022-11-02 21:11:39,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:39,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 154 [2022-11-02 21:11:40,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:40,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 168 [2022-11-02 21:11:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:41,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 178 [2022-11-02 21:11:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:43,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:43,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 191 [2022-11-02 21:11:44,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:11:44,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 205