./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/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_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:54:00,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:54:00,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:54:00,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:54:00,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:54:00,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:54:00,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:54:00,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:54:00,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:54:00,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:54:00,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:54:00,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:54:00,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:54:00,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:54:00,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:54:00,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:54:00,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:54:00,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:54:00,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:54:00,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:54:00,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:54:00,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:54:00,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:54:00,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:54:00,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:54:00,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:54:00,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:54:00,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:54:00,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:54:00,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:54:00,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:54:00,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:54:00,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:54:00,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:54:00,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:54:00,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:54:00,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:54:00,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:54:00,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:54:00,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:54:00,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:54:00,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:54:00,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:54:00,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:54:00,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:54:00,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:54:00,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:54:00,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:54:00,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:54:00,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:54:00,645 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:54:00,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:54:00,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:54:00,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:54:00,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:54:00,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:54:00,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:54:00,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:54:00,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:54:00,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:54:00,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:54:00,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:54:00,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:54:00,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:00,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:54:00,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:54:00,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:54:00,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:54:00,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:54:00,651 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:54:00,651 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:54:00,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:54:00,651 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_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-18 20:54:00,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:54:00,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:54:00,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:54:00,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:54:00,956 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:54:00,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-18 20:54:01,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/c2a810aaf/b43a3be9299447b8ad12653e44df3b86/FLAG0bc07cfd0 [2022-11-18 20:54:01,711 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:54:01,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-18 20:54:01,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/c2a810aaf/b43a3be9299447b8ad12653e44df3b86/FLAG0bc07cfd0 [2022-11-18 20:54:01,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/c2a810aaf/b43a3be9299447b8ad12653e44df3b86 [2022-11-18 20:54:01,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:54:01,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:54:01,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:01,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:54:01,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:54:01,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:01" (1/1) ... [2022-11-18 20:54:01,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c20a221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:01, skipping insertion in model container [2022-11-18 20:54:01,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:01" (1/1) ... [2022-11-18 20:54:01,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:54:02,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:54:02,344 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-18 20:54:02,350 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-18 20:54:03,249 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,256 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,258 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,259 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,261 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,280 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,280 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,282 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,283 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,284 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,285 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,286 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,287 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:54:03,514 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:54:03,516 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:54:03,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:54:03,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:54:03,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:54:03,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:54:03,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:54:03,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:54:03,524 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:54:03,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:03,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:54:03,628 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-18 20:54:03,629 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-18 20:54:03,666 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,666 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,667 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,667 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,668 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,676 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,676 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,677 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,678 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,679 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,680 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,680 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,681 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:03,696 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:54:03,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:54:03,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:54:03,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:54:03,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:54:03,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:54:03,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:54:03,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:54:03,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:54:03,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:54:03,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:03,960 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:54:03,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03 WrapperNode [2022-11-18 20:54:03,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:03,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:03,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:54:03,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:54:03,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,046 INFO L138 Inliner]: procedures = 592, calls = 608, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 84 [2022-11-18 20:54:04,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:04,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:54:04,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:54:04,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:54:04,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:54:04,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:54:04,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:54:04,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:54:04,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (1/1) ... [2022-11-18 20:54:04,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:04,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:04,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:54:04,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:54:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:54:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:54:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:54:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:54:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:54:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:54:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:54:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:54:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:54:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:54:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-18 20:54:04,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-18 20:54:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 20:54:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 20:54:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:54:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:54:04,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:54:04,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:54:04,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:54:04,744 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:54:04,744 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:54:04,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:04 BoogieIcfgContainer [2022-11-18 20:54:04,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:54:04,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:54:04,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:54:04,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:54:04,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:54:01" (1/3) ... [2022-11-18 20:54:04,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54578406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:04, skipping insertion in model container [2022-11-18 20:54:04,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:03" (2/3) ... [2022-11-18 20:54:04,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54578406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:04, skipping insertion in model container [2022-11-18 20:54:04,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:04" (3/3) ... [2022-11-18 20:54:04,764 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-18 20:54:04,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:54:04,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:54:04,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:54:04,863 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;@1d8e0e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:54:04,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:54:04,871 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) [2022-11-18 20:54:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:54:04,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:04,886 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] [2022-11-18 20:54:04,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-18 20:54:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:04,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413569097] [2022-11-18 20:54:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:54:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:54:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:54:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413569097] [2022-11-18 20:54:05,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413569097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:05,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:05,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:54:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471667737] [2022-11-18 20:54:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:05,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:54:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:54:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:54:05,368 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) [2022-11-18 20:54:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:05,396 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-18 20:54:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:54:05,398 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 [2022-11-18 20:54:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:05,405 INFO L225 Difference]: With dead ends: 117 [2022-11-18 20:54:05,405 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:54:05,408 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 [2022-11-18 20:54:05,412 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 [2022-11-18 20:54:05,413 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] [2022-11-18 20:54:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:54:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 20:54:05,481 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) [2022-11-18 20:54:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-18 20:54:05,488 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-18 20:54:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:05,489 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-18 20:54:05,490 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) [2022-11-18 20:54:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-18 20:54:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:54:05,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:05,493 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] [2022-11-18 20:54:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:54:05,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-18 20:54:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:05,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729987486] [2022-11-18 20:54:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:05,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:54:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:54:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729987486] [2022-11-18 20:54:06,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729987486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:06,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180559779] [2022-11-18 20:54:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:06,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:06,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:54:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:06,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:54:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:54:07,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:07,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180559779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:07,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:54:07,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2022-11-18 20:54:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596272028] [2022-11-18 20:54:07,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:07,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:54:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:54:07,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:54:07,450 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) [2022-11-18 20:54:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:07,728 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-18 20:54:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:54:07,729 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 [2022-11-18 20:54:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:07,730 INFO L225 Difference]: With dead ends: 58 [2022-11-18 20:54:07,730 INFO L226 Difference]: Without dead ends: 56 [2022-11-18 20:54:07,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:54:07,732 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 [2022-11-18 20:54:07,733 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] [2022-11-18 20:54:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-18 20:54:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-18 20:54:07,741 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) [2022-11-18 20:54:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-18 20:54:07,742 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-18 20:54:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:07,744 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-18 20:54:07,744 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) [2022-11-18 20:54:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-18 20:54:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:54:07,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:07,746 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] [2022-11-18 20:54:07,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:54:07,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-18 20:54:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773489859] [2022-11-18 20:54:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:54:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:54:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:54:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:54:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:54:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:08,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773489859] [2022-11-18 20:54:08,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773489859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:08,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:08,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:54:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500346885] [2022-11-18 20:54:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:54:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:54:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:08,490 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) [2022-11-18 20:54:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:08,753 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2022-11-18 20:54:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:54:08,758 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 [2022-11-18 20:54:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:08,763 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:54:08,763 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 20:54:08,764 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 [2022-11-18 20:54:08,767 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:08,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 377 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:54:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 20:54:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2022-11-18 20:54:08,794 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) [2022-11-18 20:54:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-18 20:54:08,799 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 42 [2022-11-18 20:54:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:08,800 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-18 20:54:08,800 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) [2022-11-18 20:54:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-18 20:54:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:54:08,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:08,804 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] [2022-11-18 20:54:08,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:54:08,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1722148702, now seen corresponding path program 1 times [2022-11-18 20:54:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572066892] [2022-11-18 20:54:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:54:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:54:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:54:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:54:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:54:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:54:08,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572066892] [2022-11-18 20:54:08,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572066892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:08,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:08,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:54:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919676903] [2022-11-18 20:54:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:08,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:54:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:54:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:54:08,997 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) [2022-11-18 20:54:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:09,036 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-11-18 20:54:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:54:09,037 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 [2022-11-18 20:54:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:09,039 INFO L225 Difference]: With dead ends: 113 [2022-11-18 20:54:09,039 INFO L226 Difference]: Without dead ends: 68 [2022-11-18 20:54:09,040 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 [2022-11-18 20:54:09,041 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 [2022-11-18 20:54:09,041 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] [2022-11-18 20:54:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-18 20:54:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-11-18 20:54:09,054 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) [2022-11-18 20:54:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2022-11-18 20:54:09,055 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 43 [2022-11-18 20:54:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:09,055 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2022-11-18 20:54:09,056 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) [2022-11-18 20:54:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2022-11-18 20:54:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:54:09,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:09,057 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] [2022-11-18 20:54:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:54:09,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 982661572, now seen corresponding path program 1 times [2022-11-18 20:54:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990297491] [2022-11-18 20:54:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:54:09,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:54:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:54:09,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:54:09,209 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:54:09,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:54:09,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:54:09,215 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:54:09,219 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:54:09,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:54:09 BoogieIcfgContainer [2022-11-18 20:54:09,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:54:09,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:54:09,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:54:09,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:54:09,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:04" (3/4) ... [2022-11-18 20:54:09,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 20:54:09,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:54:09,253 INFO L158 Benchmark]: Toolchain (without parser) took 7349.24ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 85.7MB in the beginning and 82.6MB in the end (delta: 3.1MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,253 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory was 107.5MB in the beginning and 107.4MB in the end (delta: 70.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:54:09,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2051.35ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 85.5MB in the beginning and 88.8MB in the end (delta: -3.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.79ms. Allocated memory is still 165.7MB. Free memory was 88.2MB in the beginning and 84.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,255 INFO L158 Benchmark]: Boogie Preprocessor took 79.38ms. Allocated memory is still 165.7MB. Free memory was 84.0MB in the beginning and 130.4MB in the end (delta: -46.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,255 INFO L158 Benchmark]: RCFGBuilder took 619.66ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 110.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,256 INFO L158 Benchmark]: TraceAbstraction took 4499.31ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 109.4MB in the beginning and 83.6MB in the end (delta: 25.8MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2022-11-18 20:54:09,256 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 209.7MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:54:09,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory was 107.5MB in the beginning and 107.4MB in the end (delta: 70.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2051.35ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 85.5MB in the beginning and 88.8MB in the end (delta: -3.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.79ms. Allocated memory is still 165.7MB. Free memory was 88.2MB in the beginning and 84.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.38ms. Allocated memory is still 165.7MB. Free memory was 84.0MB in the beginning and 130.4MB in the end (delta: -46.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * RCFGBuilder took 619.66ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 110.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4499.31ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 109.4MB in the beginning and 83.6MB in the end (delta: 25.8MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 209.7MB. Free memory is still 82.6MB. 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={5:0}, d2={4:0}] [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={5:0}, d2={4:0}, 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={5:0}, d2={4:0}, 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={5:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=0, i=0, n=1, s={5:0}, sp={5:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=0, n=1, s={5:0}, sp={5:0}] [L5873] i++ VAL [c=0, i=1, n=1, s={5:0}, sp={5:0}] [L5873] COND FALSE !(i < n) VAL [c=0, i=1, n=1, s={5:0}, sp={5:0}] [L5876] return s; VAL [c=0, i=1, n=1, s={5:0}, sp={5:0}] [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={4:0}, 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={4:0}, n=1] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={4:0}, 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: 4.4s, 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, 117 SyntacticMatches, 5 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, 2.4s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 572 SizeOfPredicates, 14 NumberOfNonLiveVariables, 144 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 [2022-11-18 20:54:09,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/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_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:54:11,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:54:11,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:54:11,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:54:11,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:54:11,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:54:11,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:54:11,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:54:11,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:54:11,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:54:11,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:54:11,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:54:11,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:54:11,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:54:11,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:54:11,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:54:11,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:54:11,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:54:11,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:54:11,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:54:11,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:54:11,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:54:11,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:54:11,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:54:11,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:54:11,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:54:11,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:54:11,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:54:11,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:54:11,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:54:11,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:54:11,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:54:11,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:54:11,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:54:11,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:54:11,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:54:11,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:54:11,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:54:11,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:54:11,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:54:11,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:54:11,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 20:54:11,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:54:11,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:54:11,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:54:11,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:54:11,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:54:11,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:54:11,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:54:11,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:54:11,652 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:54:11,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:54:11,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:54:11,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:54:11,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:54:11,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:54:11,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:54:11,654 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:54:11,654 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:54:11,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:54:11,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:54:11,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:54:11,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:54:11,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:54:11,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:54:11,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:11,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:54:11,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:54:11,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:54:11,658 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:54:11,658 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:54:11,658 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:54:11,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:54:11,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:54:11,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:54:11,659 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_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-18 20:54:12,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:54:12,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:54:12,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:54:12,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:54:12,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:54:12,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-18 20:54:12,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/b758824cc/afae2cf997114a82ac20c984c57f0cc6/FLAGfb9bce42d [2022-11-18 20:54:12,869 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:54:12,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-18 20:54:12,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/b758824cc/afae2cf997114a82ac20c984c57f0cc6/FLAGfb9bce42d [2022-11-18 20:54:13,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/data/b758824cc/afae2cf997114a82ac20c984c57f0cc6 [2022-11-18 20:54:13,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:54:13,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:54:13,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:13,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:54:13,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:54:13,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:13" (1/1) ... [2022-11-18 20:54:13,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ca51d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:13, skipping insertion in model container [2022-11-18 20:54:13,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:54:13" (1/1) ... [2022-11-18 20:54:13,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:54:13,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:54:13,463 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-18 20:54:13,470 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-18 20:54:14,170 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,170 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,171 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,172 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,173 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,187 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,188 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,190 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,194 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,199 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,201 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,210 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,211 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,397 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:54:14,399 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:54:14,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:54:14,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:54:14,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:54:14,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:54:14,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:54:14,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:54:14,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:54:14,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:54:14,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:14,564 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:54:14,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:54:14,611 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-18 20:54:14,612 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-18 20:54:14,701 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,702 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,702 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,703 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,703 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,711 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,712 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,713 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,713 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,719 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,722 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,723 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,723 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:54:14,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:54:14,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:54:14,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:54:14,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:54:14,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:54:14,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:54:14,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:54:14,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:54:14,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:54:14,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:14,816 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:54:14,841 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-18 20:54:14,842 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-18 20:54:14,910 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,910 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,911 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,911 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,912 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,918 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,919 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,920 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,921 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,922 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,925 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,926 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,926 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:54:14,944 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:54:14,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:54:14,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:54:14,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:54:14,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:54:14,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:54:14,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:54:14,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:54:14,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:54:14,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:54:14,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:54:15,111 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:54:15,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15 WrapperNode [2022-11-18 20:54:15,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:54:15,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:15,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:54:15,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:54:15,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,226 INFO L138 Inliner]: procedures = 611, calls = 608, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 84 [2022-11-18 20:54:15,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:54:15,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:54:15,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:54:15,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:54:15,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,294 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:54:15,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:54:15,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:54:15,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:54:15,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (1/1) ... [2022-11-18 20:54:15,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:54:15,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:15,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:54:15,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:54:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:54:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:54:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:54:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:54:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:54:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:54:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:54:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-18 20:54:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:54:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:54:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:54:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-18 20:54:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-18 20:54:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-18 20:54:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-18 20:54:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 20:54:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 20:54:15,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:54:15,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:54:15,978 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:54:15,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:54:15,985 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:54:15,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:15 BoogieIcfgContainer [2022-11-18 20:54:15,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:54:15,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:54:15,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:54:15,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:54:15,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:54:13" (1/3) ... [2022-11-18 20:54:15,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e39412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:15, skipping insertion in model container [2022-11-18 20:54:16,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:54:15" (2/3) ... [2022-11-18 20:54:16,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e39412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:54:16, skipping insertion in model container [2022-11-18 20:54:16,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:54:15" (3/3) ... [2022-11-18 20:54:16,002 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-18 20:54:16,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:54:16,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:54:16,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:54:16,082 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;@5c62c9c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:54:16,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:54:16,088 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) [2022-11-18 20:54:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:54:16,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:16,097 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] [2022-11-18 20:54:16,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-18 20:54:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709111022] [2022-11-18 20:54:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:16,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:16,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:16,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 20:54:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:16,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:54:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:54:16,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:54:16,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:16,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709111022] [2022-11-18 20:54:16,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709111022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:16,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:16,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:54:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866916370] [2022-11-18 20:54:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:16,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:54:16,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:54:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:54:16,460 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) [2022-11-18 20:54:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:16,503 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-18 20:54:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:54:16,506 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 [2022-11-18 20:54:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:16,513 INFO L225 Difference]: With dead ends: 117 [2022-11-18 20:54:16,513 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:54:16,516 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 [2022-11-18 20:54:16,519 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 [2022-11-18 20:54:16,520 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] [2022-11-18 20:54:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:54:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 20:54:16,556 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) [2022-11-18 20:54:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-18 20:54:16,559 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-18 20:54:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:16,559 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-18 20:54:16,560 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) [2022-11-18 20:54:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-18 20:54:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:54:16,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:16,562 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] [2022-11-18 20:54:16,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:16,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-18 20:54:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:16,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785844565] [2022-11-18 20:54:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:16,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:16,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 20:54:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:16,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:54:16,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:17,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:17,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785844565] [2022-11-18 20:54:17,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785844565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:17,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:17,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-18 20:54:17,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250322761] [2022-11-18 20:54:17,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:17,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:54:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:17,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:54:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:54:17,226 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) [2022-11-18 20:54:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:17,427 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-18 20:54:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:54:17,428 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 [2022-11-18 20:54:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:17,429 INFO L225 Difference]: With dead ends: 58 [2022-11-18 20:54:17,429 INFO L226 Difference]: Without dead ends: 56 [2022-11-18 20:54:17,430 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 [2022-11-18 20:54:17,431 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:17,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 252 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:54:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-18 20:54:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-18 20:54:17,441 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) [2022-11-18 20:54:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-18 20:54:17,442 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-18 20:54:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:17,444 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-18 20:54:17,444 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) [2022-11-18 20:54:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-18 20:54:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:54:17,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:17,445 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] [2022-11-18 20:54:17,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:17,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:17,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-18 20:54:17,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:17,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054773570] [2022-11-18 20:54:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:17,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:17,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:17,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:17,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 20:54:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:17,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:54:17,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:18,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:54:18,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054773570] [2022-11-18 20:54:18,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054773570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:18,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:18,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-18 20:54:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179673424] [2022-11-18 20:54:18,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:18,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:54:18,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:54:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:54:18,555 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) [2022-11-18 20:54:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:18,851 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-11-18 20:54:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:54:18,853 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 [2022-11-18 20:54:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:18,854 INFO L225 Difference]: With dead ends: 62 [2022-11-18 20:54:18,854 INFO L226 Difference]: Without dead ends: 60 [2022-11-18 20:54:18,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:54:18,856 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-18 20:54:18,856 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] [2022-11-18 20:54:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-18 20:54:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-18 20:54:18,866 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) [2022-11-18 20:54:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-11-18 20:54:18,868 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2022-11-18 20:54:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:18,868 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-11-18 20:54:18,869 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) [2022-11-18 20:54:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-11-18 20:54:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:54:18,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:18,870 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] [2022-11-18 20:54:18,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:19,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:19,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2022-11-18 20:54:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:19,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539253079] [2022-11-18 20:54:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:19,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:19,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:19,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:19,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 20:54:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:19,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:54:19,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 20:54:19,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:54:19,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:19,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539253079] [2022-11-18 20:54:19,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539253079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:19,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:19,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:19,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448208817] [2022-11-18 20:54:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:19,437 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) [2022-11-18 20:54:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:19,589 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-18 20:54:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:19,590 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 [2022-11-18 20:54:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:19,591 INFO L225 Difference]: With dead ends: 66 [2022-11-18 20:54:19,591 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:54:19,592 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 [2022-11-18 20:54:19,593 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 [2022-11-18 20:54:19,593 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] [2022-11-18 20:54:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:54:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 20:54:19,605 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) [2022-11-18 20:54:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-11-18 20:54:19,607 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2022-11-18 20:54:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:19,607 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-11-18 20:54:19,607 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) [2022-11-18 20:54:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-11-18 20:54:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:54:19,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:19,609 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] [2022-11-18 20:54:19,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-18 20:54:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:19,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2022-11-18 20:54:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:19,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962332003] [2022-11-18 20:54:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:19,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:19,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:19,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:19,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 20:54:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:19,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:54:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:54:20,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:54:20,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962332003] [2022-11-18 20:54:20,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962332003] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:20,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:20,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-11-18 20:54:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100461992] [2022-11-18 20:54:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:54:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:54:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:54:20,424 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) [2022-11-18 20:54:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:20,577 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-18 20:54:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:54:20,580 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 [2022-11-18 20:54:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:20,582 INFO L225 Difference]: With dead ends: 107 [2022-11-18 20:54:20,582 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 20:54:20,582 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 [2022-11-18 20:54:20,583 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 [2022-11-18 20:54:20,583 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] [2022-11-18 20:54:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 20:54:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-11-18 20:54:20,606 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) [2022-11-18 20:54:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-18 20:54:20,609 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2022-11-18 20:54:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:20,611 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-18 20:54:20,611 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) [2022-11-18 20:54:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-18 20:54:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:54:20,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:20,621 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] [2022-11-18 20:54:20,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:20,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2022-11-18 20:54:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287912674] [2022-11-18 20:54:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:20,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:20,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:20,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:20,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 20:54:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:21,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:54:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:54:21,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:54:21,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:21,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287912674] [2022-11-18 20:54:21,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287912674] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:21,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:21,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 20:54:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714229440] [2022-11-18 20:54:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:21,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:54:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:54:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:54:21,406 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) [2022-11-18 20:54:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:21,454 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2022-11-18 20:54:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:54:21,455 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 [2022-11-18 20:54:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:21,458 INFO L225 Difference]: With dead ends: 131 [2022-11-18 20:54:21,458 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 20:54:21,462 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 [2022-11-18 20:54:21,465 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 [2022-11-18 20:54:21,466 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] [2022-11-18 20:54:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 20:54:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-18 20:54:21,498 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) [2022-11-18 20:54:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-11-18 20:54:21,502 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2022-11-18 20:54:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:21,502 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-11-18 20:54:21,502 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) [2022-11-18 20:54:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-11-18 20:54:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:54:21,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:21,507 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] [2022-11-18 20:54:21,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:21,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:21,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2022-11-18 20:54:21,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:21,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083870447] [2022-11-18 20:54:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:21,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:21,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:21,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 20:54:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:21,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:54:21,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:54:22,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:54:22,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:22,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083870447] [2022-11-18 20:54:22,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083870447] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:22,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:54:22,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2022-11-18 20:54:22,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570015313] [2022-11-18 20:54:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:54:22,395 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) [2022-11-18 20:54:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:22,550 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2022-11-18 20:54:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:22,551 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 [2022-11-18 20:54:22,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:22,552 INFO L225 Difference]: With dead ends: 100 [2022-11-18 20:54:22,552 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 20:54:22,552 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 [2022-11-18 20:54:22,553 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 [2022-11-18 20:54:22,553 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] [2022-11-18 20:54:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 20:54:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-18 20:54:22,563 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) [2022-11-18 20:54:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-11-18 20:54:22,564 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2022-11-18 20:54:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:22,565 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-11-18 20:54:22,565 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) [2022-11-18 20:54:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-11-18 20:54:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:54:22,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:22,566 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] [2022-11-18 20:54:22,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:22,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:22,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2022-11-18 20:54:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140030559] [2022-11-18 20:54:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:22,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:22,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 20:54:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:22,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:54:22,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:54:23,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:54:23,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140030559] [2022-11-18 20:54:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140030559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:23,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:23,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-18 20:54:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081118771] [2022-11-18 20:54:23,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:23,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:54:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:54:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:54:23,617 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) [2022-11-18 20:54:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:23,852 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2022-11-18 20:54:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:54:23,853 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 [2022-11-18 20:54:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:23,854 INFO L225 Difference]: With dead ends: 122 [2022-11-18 20:54:23,854 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 20:54:23,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:54:23,855 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 [2022-11-18 20:54:23,856 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] [2022-11-18 20:54:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 20:54:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-18 20:54:23,867 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) [2022-11-18 20:54:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-11-18 20:54:23,867 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2022-11-18 20:54:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:23,868 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-11-18 20:54:23,868 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) [2022-11-18 20:54:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-11-18 20:54:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:54:23,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:23,869 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] [2022-11-18 20:54:23,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:24,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:24,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:24,085 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2022-11-18 20:54:24,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:24,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094508032] [2022-11-18 20:54:24,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:54:24,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:24,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:24,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:24,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 20:54:24,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:54:24,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:54:24,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:54:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:54:24,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:54:25,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:25,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094508032] [2022-11-18 20:54:25,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094508032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:25,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:25,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-11-18 20:54:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962009684] [2022-11-18 20:54:25,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:54:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:54:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:54:25,495 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) [2022-11-18 20:54:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:26,428 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-11-18 20:54:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:54:26,429 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 [2022-11-18 20:54:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:26,430 INFO L225 Difference]: With dead ends: 130 [2022-11-18 20:54:26,430 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 20:54:26,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:54:26,431 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 [2022-11-18 20:54:26,432 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] [2022-11-18 20:54:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 20:54:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-18 20:54:26,443 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) [2022-11-18 20:54:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-18 20:54:26,444 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2022-11-18 20:54:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:26,445 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-18 20:54:26,445 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) [2022-11-18 20:54:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-18 20:54:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 20:54:26,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:26,446 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] [2022-11-18 20:54:26,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:26,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:26,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2022-11-18 20:54:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:26,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175375826] [2022-11-18 20:54:26,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:54:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:26,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 20:54:26,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:54:26,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:54:26,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:54:26,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-18 20:54:27,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 20:54:27,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175375826] [2022-11-18 20:54:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175375826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:27,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:27,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 20:54:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164178243] [2022-11-18 20:54:27,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:27,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:54:27,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:54:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:54:27,489 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) [2022-11-18 20:54:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:28,431 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2022-11-18 20:54:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:54:28,432 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 [2022-11-18 20:54:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:28,433 INFO L225 Difference]: With dead ends: 113 [2022-11-18 20:54:28,433 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 20:54:28,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:54:28,434 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:28,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 407 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 145 Invalid, 0 Unknown, 20 Unchecked, 0.6s Time] [2022-11-18 20:54:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 20:54:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-11-18 20:54:28,451 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) [2022-11-18 20:54:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2022-11-18 20:54:28,452 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2022-11-18 20:54:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:28,452 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2022-11-18 20:54:28,453 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) [2022-11-18 20:54:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2022-11-18 20:54:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:54:28,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:28,454 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] [2022-11-18 20:54:28,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:28,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:28,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:28,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2022-11-18 20:54:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:28,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895001283] [2022-11-18 20:54:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:28,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:28,681 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:28,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 20:54:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:28,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:54:28,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:54:29,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:54:31,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895001283] [2022-11-18 20:54:31,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895001283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:54:31,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:54:31,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2022-11-18 20:54:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453633347] [2022-11-18 20:54:31,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:54:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:54:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:54:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:54:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:54:31,124 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) [2022-11-18 20:54:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:31,552 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-11-18 20:54:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:54:31,553 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 [2022-11-18 20:54:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:31,554 INFO L225 Difference]: With dead ends: 142 [2022-11-18 20:54:31,554 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 20:54:31,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:54:31,555 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-18 20:54:31,556 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] [2022-11-18 20:54:31,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 20:54:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 20:54:31,567 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) [2022-11-18 20:54:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2022-11-18 20:54:31,568 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2022-11-18 20:54:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:31,569 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2022-11-18 20:54:31,569 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) [2022-11-18 20:54:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2022-11-18 20:54:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:54:31,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:31,572 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] [2022-11-18 20:54:31,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:31,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:31,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2022-11-18 20:54:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:54:31,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037268718] [2022-11-18 20:54:31,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:54:31,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:54:31,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:54:31,791 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:54:31,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 20:54:32,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:54:32,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:54:32,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-18 20:54:32,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:32,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:54:33,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 20:54:33,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:33,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:54:33,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:33,791 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,246 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:34,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:34,825 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:35,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:35,444 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:36,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,067 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:36,859 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:40,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:40,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:40,752 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:47,014 INFO L321 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2022-11-18 20:54:47,015 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:54:47,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:54:48,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:54:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037268718] [2022-11-18 20:54:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037268718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:54:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [294555698] [2022-11-18 20:54:48,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:54:48,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:54:48,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:54:48,167 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:54:48,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-18 20:54:49,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:54:49,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:54:49,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 20:54:49,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:49,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:54:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:50,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 20:54:51,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:51,592 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-18 20:54:51,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2022-11-18 20:54:52,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:52,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:52,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:52,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:52,425 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:52,425 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:53,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:53,282 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:53,283 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:54,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:54,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:54,267 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:54,268 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:55,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:55,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:55,331 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:55,332 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:56,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:56,441 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:56,441 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:54:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:57,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:57,646 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:54:57,647 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:55:04,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:55:04,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:04,961 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-18 20:55:04,962 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:55:13,617 INFO L321 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-11-18 20:55:13,618 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:55:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:55:13,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:13,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [294555698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:55:13,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:55:13,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2022-11-18 20:55:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125239035] [2022-11-18 20:55:13,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:13,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-18 20:55:13,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:55:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-18 20:55:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2022-11-18 20:55:13,721 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) [2022-11-18 20:55:34,828 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 [] [2022-11-18 20:55:36,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:40,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:45,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:48,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:01,091 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2022-11-18 20:56:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:56:01,092 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 [2022-11-18 20:56:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:01,093 INFO L225 Difference]: With dead ends: 188 [2022-11-18 20:56:01,093 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 20:56:01,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 95 SyntacticMatches, 18 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4206 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=902, Invalid=11308, Unknown=0, NotChecked=0, Total=12210 [2022-11-18 20:56:01,097 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 241 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:01,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1632 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2096 Invalid, 0 Unknown, 385 Unchecked, 38.3s Time] [2022-11-18 20:56:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 20:56:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 158. [2022-11-18 20:56:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 113 states have (on average 1.079646017699115) internal successors, (122), 115 states have internal predecessors, (122), 28 states have call successors, (28), 19 states have call predecessors, (28), 16 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-18 20:56:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2022-11-18 20:56:01,144 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 87 [2022-11-18 20:56:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:01,145 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2022-11-18 20:56:01,145 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) [2022-11-18 20:56:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2022-11-18 20:56:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:56:01,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:01,146 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] [2022-11-18 20:56:01,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:01,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:56:01,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1360942848, now seen corresponding path program 1 times [2022-11-18 20:56:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:56:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748188266] [2022-11-18 20:56:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:56:01,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:56:01,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 20:56:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:01,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:56:01,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-18 20:56:02,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:56:02,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:56:02,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748188266] [2022-11-18 20:56:02,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748188266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:02,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:02,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:56:02,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108611260] [2022-11-18 20:56:02,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:56:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:02,180 INFO L87 Difference]: Start difference. First operand 158 states and 174 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) [2022-11-18 20:56:02,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:02,369 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2022-11-18 20:56:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:56:02,370 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 [2022-11-18 20:56:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:02,372 INFO L225 Difference]: With dead ends: 184 [2022-11-18 20:56:02,372 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:56:02,373 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 [2022-11-18 20:56:02,373 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:02,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 179 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-18 20:56:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:56:02,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-18 20:56:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 97 states have internal predecessors, (100), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:56:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-11-18 20:56:02,411 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 89 [2022-11-18 20:56:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:02,411 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-11-18 20:56:02,412 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) [2022-11-18 20:56:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-11-18 20:56:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:56:02,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:02,413 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] [2022-11-18 20:56:02,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:02,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:02,616 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash -250047413, now seen corresponding path program 3 times [2022-11-18 20:56:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:56:02,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943802197] [2022-11-18 20:56:02,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:56:02,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:56:02,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:56:02,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 20:56:03,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-18 20:56:03,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:56:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:56:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 41 proven. 87 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:56:04,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:56:07,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:56:07,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943802197] [2022-11-18 20:56:07,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943802197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:07,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:56:07,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 38 [2022-11-18 20:56:07,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604987392] [2022-11-18 20:56:07,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:07,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:56:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:56:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:56:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:56:07,534 INFO L87 Difference]: Start difference. First operand 132 states and 142 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) [2022-11-18 20:56:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:18,864 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2022-11-18 20:56:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:56:18,867 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 [2022-11-18 20:56:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:18,869 INFO L225 Difference]: With dead ends: 209 [2022-11-18 20:56:18,869 INFO L226 Difference]: Without dead ends: 157 [2022-11-18 20:56:18,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=656, Invalid=2650, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 20:56:18,872 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 503 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:18,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 723 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 836 Invalid, 0 Unknown, 78 Unchecked, 3.2s Time] [2022-11-18 20:56:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-18 20:56:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2022-11-18 20:56:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 117 states have (on average 1.0512820512820513) internal successors, (123), 119 states have internal predecessors, (123), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:56:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2022-11-18 20:56:18,922 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 89 [2022-11-18 20:56:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:18,923 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2022-11-18 20:56:18,923 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) [2022-11-18 20:56:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2022-11-18 20:56:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:56:18,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:18,925 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] [2022-11-18 20:56:18,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:19,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:19,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -59588295, now seen corresponding path program 4 times [2022-11-18 20:56:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:56:19,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230799279] [2022-11-18 20:56:19,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:56:19,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:19,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:56:19,132 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:56:19,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 20:56:19,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:56:19,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:56:19,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:56:19,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 38 proven. 269 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:56:21,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 9 proven. 269 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:56:27,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:56:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230799279] [2022-11-18 20:56:27,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230799279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:27,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:56:27,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 56 [2022-11-18 20:56:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170677876] [2022-11-18 20:56:27,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 20:56:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:56:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 20:56:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=2566, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:56:27,627 INFO L87 Difference]: Start difference. First operand 154 states and 165 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) [2022-11-18 20:56:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:33,255 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2022-11-18 20:56:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:56:33,257 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 [2022-11-18 20:56:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:33,258 INFO L225 Difference]: With dead ends: 219 [2022-11-18 20:56:33,259 INFO L226 Difference]: Without dead ends: 183 [2022-11-18 20:56:33,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=728, Invalid=3304, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 20:56:33,260 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 380 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:33,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1896 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1331 Invalid, 0 Unknown, 139 Unchecked, 4.7s Time] [2022-11-18 20:56:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-18 20:56:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 156. [2022-11-18 20:56:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 119 states have (on average 1.050420168067227) internal successors, (125), 121 states have internal predecessors, (125), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:56:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2022-11-18 20:56:33,305 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 103 [2022-11-18 20:56:33,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:33,306 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2022-11-18 20:56:33,306 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) [2022-11-18 20:56:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2022-11-18 20:56:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-18 20:56:33,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:33,308 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] [2022-11-18 20:56:33,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:33,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:33,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash 609255285, now seen corresponding path program 1 times [2022-11-18 20:56:33,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:56:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210062866] [2022-11-18 20:56:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:56:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:56:33,519 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:56:33,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 20:56:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:34,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 20:56:34,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:35,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:35,783 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:56:42,157 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-18 20:56:42,157 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:56:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 54 proven. 96 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:56:42,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:43,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:56:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210062866] [2022-11-18 20:56:43,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210062866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [535311917] [2022-11-18 20:56:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:56:43,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:56:43,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:56:43,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-18 20:56:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:44,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:56:44,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:46,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:56:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:56:46,340 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:56:50,945 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-18 20:56:50,946 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:56:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 60 proven. 84 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:56:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [535311917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:51,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:56:51,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 42 [2022-11-18 20:56:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815990497] [2022-11-18 20:56:51,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:56:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:56:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:56:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2037, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:56:51,027 INFO L87 Difference]: Start difference. First operand 156 states and 167 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) [2022-11-18 20:57:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:07,462 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2022-11-18 20:57:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:57:07,462 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 [2022-11-18 20:57:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:07,464 INFO L225 Difference]: With dead ends: 208 [2022-11-18 20:57:07,464 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 20:57:07,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 159 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=335, Invalid=3825, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 20:57:07,466 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 257 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:07,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1249 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1317 Invalid, 0 Unknown, 176 Unchecked, 14.0s Time] [2022-11-18 20:57:07,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 20:57:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2022-11-18 20:57:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 121 states have (on average 1.0495867768595042) internal successors, (127), 123 states have internal predecessors, (127), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:57:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2022-11-18 20:57:07,530 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 108 [2022-11-18 20:57:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:07,530 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2022-11-18 20:57:07,530 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) [2022-11-18 20:57:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2022-11-18 20:57:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 20:57:07,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:07,532 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] [2022-11-18 20:57:07,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:07,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:57:07,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:57:07,946 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash -55356389, now seen corresponding path program 5 times [2022-11-18 20:57:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:57:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209843005] [2022-11-18 20:57:07,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:57:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:57:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:57:07,948 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:57:07,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 20:57:11,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-11-18 20:57:11,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:57:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-18 20:57:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:57:11,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:57:11,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 20:57:12,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-18 20:57:12,868 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:13,456 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:14,153 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:14,923 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:15,814 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:16,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:16,638 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:17,594 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:18,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:18,546 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:19,608 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:20,843 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:22,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:22,176 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:23,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:23,516 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:24,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:24,870 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:26,329 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:57:37,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:37,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:37,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 149 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 294 [2022-11-18 20:57:40,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:57:40,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:57:40,888 INFO L217 Elim1Store]: Index analysis took 157 ms [2022-11-18 20:57:40,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 241 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 396 [2022-11-18 20:58:00,687 INFO L321 Elim1Store]: treesize reduction 250, result has 2.7 percent of original size [2022-11-18 20:58:00,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 121 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 32 case distinctions, treesize of input 239 treesize of output 109 [2022-11-18 20:58:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 42 proven. 284 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:58:01,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:58:02,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:58:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209843005] [2022-11-18 20:58:02,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209843005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:58:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [693862001] [2022-11-18 20:58:02,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:58:02,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:58:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:58:02,968 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:58:02,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79d79139-920a-4f7d-9d68-15088776e7e0/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process