./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF --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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:13:21,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:13:21,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:13:21,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:13:21,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:13:21,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:13:21,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:13:22,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:13:22,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:13:22,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:13:22,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:13:22,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:13:22,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:13:22,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:13:22,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:13:22,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:13:22,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:13:22,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:13:22,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:13:22,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:13:22,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:13:22,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:13:22,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:13:22,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:13:22,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:13:22,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:13:22,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:13:22,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:13:22,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:13:22,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:13:22,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:13:22,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:13:22,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:13:22,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:13:22,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:13:22,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:13:22,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:13:22,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:13:22,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:13:22,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:13:22,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:13:22,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:13:22,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:13:22,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:13:22,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:13:22,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:13:22,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:13:22,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:13:22,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:13:22,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:13:22,120 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:13:22,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:13:22,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:13:22,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:13:22,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:13:22,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:13:22,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:13:22,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:13:22,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:13:22,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:13:22,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:13:22,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:13:22,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:13:22,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:22,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:13:22,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:13:22,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:13:22,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:13:22,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:13:22,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:13:22,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:13:22,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:13:22,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:13:22,128 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_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2021-11-20 06:13:22,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:13:22,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:13:22,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:13:22,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:13:22,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:13:22,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-20 06:13:22,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/data/e99752d01/34ee8798c1894d62a8ecd42acd85aa51/FLAG12abedf8d [2021-11-20 06:13:23,367 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:13:23,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-20 06:13:23,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/data/e99752d01/34ee8798c1894d62a8ecd42acd85aa51/FLAG12abedf8d [2021-11-20 06:13:23,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/data/e99752d01/34ee8798c1894d62a8ecd42acd85aa51 [2021-11-20 06:13:23,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:13:23,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:13:23,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:23,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:13:23,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:13:23,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:23" (1/1) ... [2021-11-20 06:13:23,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab4c0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:23, skipping insertion in model container [2021-11-20 06:13:23,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:23" (1/1) ... [2021-11-20 06:13:23,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:13:23,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:13:24,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-20 06:13:24,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-20 06:13:25,215 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:13:25,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:13:25,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:13:25,637 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:13:25,639 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:13:25,639 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:13:25,640 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:13:25,641 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:13:25,641 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:13:25,642 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:13:25,825 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:13:25,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,859 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,967 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:25,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:26,086 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:13:26,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-20 06:13:26,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-20 06:13:26,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,203 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:13:26,204 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:13:26,204 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:13:26,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:13:26,206 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:13:26,209 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:13:26,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:13:26,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:13:26,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:13:26,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:13:26,236 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:13:26,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,278 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:13:26,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:26,610 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:13:26,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26 WrapperNode [2021-11-20 06:13:26,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:26,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:26,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:13:26,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:13:26,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,851 INFO L137 Inliner]: procedures = 697, calls = 1880, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1145 [2021-11-20 06:13:26,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:26,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:13:26,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:13:26,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:13:26,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:26,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:27,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:27,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:13:27,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:13:27,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:13:27,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:13:27,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (1/1) ... [2021-11-20 06:13:27,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:27,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:13:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:13:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 06:13:27,143 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 06:13:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2021-11-20 06:13:27,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2021-11-20 06:13:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 06:13:27,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 06:13:27,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:13:27,144 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 06:13:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 06:13:27,144 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 06:13:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 06:13:27,144 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 06:13:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 06:13:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-20 06:13:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-20 06:13:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 06:13:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 06:13:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:13:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 06:13:27,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 06:13:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:13:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:13:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:13:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:13:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:13:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 06:13:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 06:13:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 06:13:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 06:13:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:13:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:13:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 06:13:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 06:13:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 06:13:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 06:13:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 06:13:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 06:13:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 06:13:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 06:13:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-20 06:13:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-20 06:13:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 06:13:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 06:13:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:13:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:13:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:13:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:13:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 06:13:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 06:13:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 06:13:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 06:13:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-20 06:13:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-20 06:13:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:13:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-20 06:13:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-20 06:13:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:13:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:13:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2021-11-20 06:13:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2021-11-20 06:13:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 06:13:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 06:13:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 06:13:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 06:13:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 06:13:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 06:13:27,163 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-20 06:13:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-20 06:13:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:13:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:13:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:13:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2021-11-20 06:13:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2021-11-20 06:13:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:13:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:13:27,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 06:13:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 06:13:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:13:27,646 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:13:27,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:13:29,220 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:13:29,239 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:13:29,239 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 06:13:29,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:29 BoogieIcfgContainer [2021-11-20 06:13:29,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:13:29,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:13:29,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:13:29,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:13:29,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:13:23" (1/3) ... [2021-11-20 06:13:29,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7161208c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:13:29, skipping insertion in model container [2021-11-20 06:13:29,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:26" (2/3) ... [2021-11-20 06:13:29,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7161208c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:13:29, skipping insertion in model container [2021-11-20 06:13:29,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:29" (3/3) ... [2021-11-20 06:13:29,254 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2021-11-20 06:13:29,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:13:29,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:13:29,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:13:29,341 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:13:29,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:13:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 313 states have (on average 1.2523961661341854) internal successors, (392), 316 states have internal predecessors, (392), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2021-11-20 06:13:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 06:13:29,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:29,421 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:29,422 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:29,429 INFO L85 PathProgramCache]: Analyzing trace with hash -472751734, now seen corresponding path program 1 times [2021-11-20 06:13:29,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:29,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132051657] [2021-11-20 06:13:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:29,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:13:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:13:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:13:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:13:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:13:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:13:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:13:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:13:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:13:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:13:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:13:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:13:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:13:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 06:13:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:13:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 06:13:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:13:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 06:13:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:13:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 06:13:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 06:13:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 06:13:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 06:13:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-20 06:13:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 06:13:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 06:13:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-20 06:13:30,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132051657] [2021-11-20 06:13:30,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132051657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:30,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515128608] [2021-11-20 06:13:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:30,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:30,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:30,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:13:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:13:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-20 06:13:31,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:31,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515128608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:31,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:13:31,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-20 06:13:31,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478038291] [2021-11-20 06:13:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:31,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:13:31,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:13:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:13:31,635 INFO L87 Difference]: Start difference. First operand has 541 states, 313 states have (on average 1.2523961661341854) internal successors, (392), 316 states have internal predecessors, (392), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 06:13:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:32,094 INFO L93 Difference]: Finished difference Result 1071 states and 1687 transitions. [2021-11-20 06:13:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:13:32,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2021-11-20 06:13:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:32,119 INFO L225 Difference]: With dead ends: 1071 [2021-11-20 06:13:32,119 INFO L226 Difference]: Without dead ends: 536 [2021-11-20 06:13:32,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:13:32,132 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 773 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:32,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 2847 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:13:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-20 06:13:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-11-20 06:13:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 308 states have (on average 1.2337662337662338) internal successors, (380), 311 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2021-11-20 06:13:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 772 transitions. [2021-11-20 06:13:32,238 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 772 transitions. Word has length 162 [2021-11-20 06:13:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:32,239 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 772 transitions. [2021-11-20 06:13:32,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 06:13:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 772 transitions. [2021-11-20 06:13:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-20 06:13:32,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:32,244 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:32,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:32,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 06:13:32,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash 817797277, now seen corresponding path program 1 times [2021-11-20 06:13:32,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:32,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091004276] [2021-11-20 06:13:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:32,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:13:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:13:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:13:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:13:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:13:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:13:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:13:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:13:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:13:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:13:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:13:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:13:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:13:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:13:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:13:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:13:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:13:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 06:13:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:13:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 06:13:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 06:13:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:13:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 06:13:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 06:13:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 06:13:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 06:13:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 06:13:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-20 06:13:33,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:33,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091004276] [2021-11-20 06:13:33,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091004276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:13:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167470431] [2021-11-20 06:13:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:33,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:33,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:33,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:13:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:33,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:13:33,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-20 06:13:34,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:34,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167470431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:34,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:13:34,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-11-20 06:13:34,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493718509] [2021-11-20 06:13:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:34,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:13:34,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:13:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:13:34,124 INFO L87 Difference]: Start difference. First operand 536 states and 772 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 06:13:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:34,776 INFO L93 Difference]: Finished difference Result 1060 states and 1568 transitions. [2021-11-20 06:13:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:13:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 170 [2021-11-20 06:13:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:34,785 INFO L225 Difference]: With dead ends: 1060 [2021-11-20 06:13:34,785 INFO L226 Difference]: Without dead ends: 557 [2021-11-20 06:13:34,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:13:34,790 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 810 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:34,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 3997 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:13:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-20 06:13:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2021-11-20 06:13:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-20 06:13:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-20 06:13:34,842 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 170 [2021-11-20 06:13:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:34,843 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-20 06:13:34,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 06:13:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-20 06:13:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-20 06:13:34,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:34,846 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:34,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:35,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:35,071 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1492622266, now seen corresponding path program 1 times [2021-11-20 06:13:35,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:35,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599451864] [2021-11-20 06:13:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:35,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:35,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:35,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057269019] [2021-11-20 06:13:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:35,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:35,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:35,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:13:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:35,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:13:35,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-20 06:13:36,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:36,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599451864] [2021-11-20 06:13:36,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057269019] [2021-11-20 06:13:36,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057269019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:36,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:36,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:13:36,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824637496] [2021-11-20 06:13:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:36,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:13:36,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:13:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:13:36,140 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-20 06:13:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:36,485 INFO L93 Difference]: Finished difference Result 1085 states and 1646 transitions. [2021-11-20 06:13:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:13:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 185 [2021-11-20 06:13:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:36,495 INFO L225 Difference]: With dead ends: 1085 [2021-11-20 06:13:36,495 INFO L226 Difference]: Without dead ends: 563 [2021-11-20 06:13:36,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:13:36,504 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 793 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:36,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 3507 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:13:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-20 06:13:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 555. [2021-11-20 06:13:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-20 06:13:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-20 06:13:36,567 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 185 [2021-11-20 06:13:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:36,569 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-20 06:13:36,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-20 06:13:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-20 06:13:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-20 06:13:36,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:36,573 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:36,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:36,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:36,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:36,799 INFO L85 PathProgramCache]: Analyzing trace with hash 835617176, now seen corresponding path program 1 times [2021-11-20 06:13:36,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:36,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861870039] [2021-11-20 06:13:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:36,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:36,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:36,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486436377] [2021-11-20 06:13:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:36,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:36,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:36,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:36,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:13:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:37,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-20 06:13:37,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:37,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:37,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861870039] [2021-11-20 06:13:37,896 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:37,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486436377] [2021-11-20 06:13:37,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486436377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:37,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:37,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:13:37,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401385406] [2021-11-20 06:13:37,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:37,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:13:37,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:13:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:13:37,899 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:38,610 INFO L93 Difference]: Finished difference Result 1095 states and 1655 transitions. [2021-11-20 06:13:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:13:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 201 [2021-11-20 06:13:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:38,617 INFO L225 Difference]: With dead ends: 1095 [2021-11-20 06:13:38,617 INFO L226 Difference]: Without dead ends: 573 [2021-11-20 06:13:38,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:13:38,622 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 843 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:38,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 4617 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:13:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-20 06:13:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2021-11-20 06:13:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-20 06:13:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-20 06:13:38,664 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 201 [2021-11-20 06:13:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:38,664 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-20 06:13:38,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-20 06:13:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-20 06:13:38,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:38,669 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:38,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:38,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:38,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -57404099, now seen corresponding path program 2 times [2021-11-20 06:13:38,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:38,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431966893] [2021-11-20 06:13:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:38,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:38,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954683845] [2021-11-20 06:13:38,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:13:38,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:38,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:13:39,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:13:39,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:13:39,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-20 06:13:40,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:40,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:40,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431966893] [2021-11-20 06:13:40,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:40,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954683845] [2021-11-20 06:13:40,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954683845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:40,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:40,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:13:40,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80377499] [2021-11-20 06:13:40,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:40,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:13:40,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:13:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:13:40,211 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-20 06:13:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:40,678 INFO L93 Difference]: Finished difference Result 1067 states and 1605 transitions. [2021-11-20 06:13:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:13:40,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 216 [2021-11-20 06:13:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:40,685 INFO L225 Difference]: With dead ends: 1067 [2021-11-20 06:13:40,685 INFO L226 Difference]: Without dead ends: 557 [2021-11-20 06:13:40,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:13:40,690 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 834 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 4012 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:40,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 4012 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:13:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-20 06:13:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2021-11-20 06:13:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.24) internal successors, (403), 329 states have internal predecessors, (403), 195 states have call successors, (195), 33 states have call predecessors, (195), 35 states have return successors, (237), 194 states have call predecessors, (237), 193 states have call successors, (237) [2021-11-20 06:13:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 835 transitions. [2021-11-20 06:13:40,736 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 835 transitions. Word has length 216 [2021-11-20 06:13:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:40,738 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 835 transitions. [2021-11-20 06:13:40,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-20 06:13:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 835 transitions. [2021-11-20 06:13:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-20 06:13:40,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:40,746 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:40,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:40,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:40,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash -111036656, now seen corresponding path program 1 times [2021-11-20 06:13:40,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:40,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668068392] [2021-11-20 06:13:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:40,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:41,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:41,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036714276] [2021-11-20 06:13:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:41,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:41,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:41,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:41,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:13:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:41,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:41,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-11-20 06:13:42,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:42,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:42,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668068392] [2021-11-20 06:13:42,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:42,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036714276] [2021-11-20 06:13:42,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036714276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:42,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:42,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:13:42,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113841059] [2021-11-20 06:13:42,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:42,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:13:42,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:13:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:13:42,023 INFO L87 Difference]: Start difference. First operand 557 states and 835 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 06:13:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:42,864 INFO L93 Difference]: Finished difference Result 1085 states and 1635 transitions. [2021-11-20 06:13:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:13:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 224 [2021-11-20 06:13:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:42,871 INFO L225 Difference]: With dead ends: 1085 [2021-11-20 06:13:42,871 INFO L226 Difference]: Without dead ends: 573 [2021-11-20 06:13:42,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:13:42,876 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 875 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:42,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 5068 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:13:42,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-20 06:13:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2021-11-20 06:13:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (238), 196 states have call predecessors, (238), 194 states have call successors, (238) [2021-11-20 06:13:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 855 transitions. [2021-11-20 06:13:42,931 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 855 transitions. Word has length 224 [2021-11-20 06:13:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:42,932 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 855 transitions. [2021-11-20 06:13:42,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 06:13:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 855 transitions. [2021-11-20 06:13:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-20 06:13:42,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:42,937 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:42,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:43,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash 60507603, now seen corresponding path program 2 times [2021-11-20 06:13:43,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:43,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281483945] [2021-11-20 06:13:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:43,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:43,222 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:43,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273423695] [2021-11-20 06:13:43,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:13:43,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:43,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:43,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:43,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:13:44,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:13:44,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-20 06:13:44,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:44,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281483945] [2021-11-20 06:13:44,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273423695] [2021-11-20 06:13:44,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273423695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:44,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:44,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:13:44,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387119286] [2021-11-20 06:13:44,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:13:44,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:13:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:13:44,634 INFO L87 Difference]: Start difference. First operand 571 states and 855 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 06:13:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:45,190 INFO L93 Difference]: Finished difference Result 1105 states and 1667 transitions. [2021-11-20 06:13:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:13:45,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 239 [2021-11-20 06:13:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:45,199 INFO L225 Difference]: With dead ends: 1105 [2021-11-20 06:13:45,199 INFO L226 Difference]: Without dead ends: 579 [2021-11-20 06:13:45,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:13:45,204 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 858 mSDsluCounter, 3956 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:45,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 4642 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:13:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-20 06:13:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 571. [2021-11-20 06:13:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (238), 196 states have call predecessors, (238), 194 states have call successors, (238) [2021-11-20 06:13:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 855 transitions. [2021-11-20 06:13:45,249 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 855 transitions. Word has length 239 [2021-11-20 06:13:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:45,250 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 855 transitions. [2021-11-20 06:13:45,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 06:13:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 855 transitions. [2021-11-20 06:13:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-20 06:13:45,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:45,253 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:45,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:45,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 06:13:45,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -907843344, now seen corresponding path program 1 times [2021-11-20 06:13:45,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:45,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919236337] [2021-11-20 06:13:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:45,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:45,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614604223] [2021-11-20 06:13:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:45,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:45,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:45,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:13:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:46,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:46,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-20 06:13:46,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:46,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:46,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919236337] [2021-11-20 06:13:46,706 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:46,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614604223] [2021-11-20 06:13:46,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614604223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:46,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:46,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:13:46,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975656784] [2021-11-20 06:13:46,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:46,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:13:46,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:13:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:13:46,710 INFO L87 Difference]: Start difference. First operand 571 states and 855 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:47,380 INFO L93 Difference]: Finished difference Result 1091 states and 1635 transitions. [2021-11-20 06:13:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:13:47,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2021-11-20 06:13:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:47,389 INFO L225 Difference]: With dead ends: 1091 [2021-11-20 06:13:47,389 INFO L226 Difference]: Without dead ends: 571 [2021-11-20 06:13:47,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:13:47,394 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 847 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:47,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 4453 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:13:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-20 06:13:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-20 06:13:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (235), 196 states have call predecessors, (235), 194 states have call successors, (235) [2021-11-20 06:13:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 852 transitions. [2021-11-20 06:13:47,443 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 852 transitions. Word has length 270 [2021-11-20 06:13:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:47,447 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 852 transitions. [2021-11-20 06:13:47,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 852 transitions. [2021-11-20 06:13:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-20 06:13:47,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:47,451 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:47,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:47,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 06:13:47,666 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 527769932, now seen corresponding path program 2 times [2021-11-20 06:13:47,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:47,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539223598] [2021-11-20 06:13:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:47,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:47,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:47,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226250756] [2021-11-20 06:13:47,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:13:47,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:47,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:47,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:13:48,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:13:48,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:48,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:13:48,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-20 06:13:49,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:49,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:49,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539223598] [2021-11-20 06:13:49,222 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:49,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226250756] [2021-11-20 06:13:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226250756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:49,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:49,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:13:49,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617248778] [2021-11-20 06:13:49,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:49,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:13:49,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:13:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:13:49,229 INFO L87 Difference]: Start difference. First operand 571 states and 852 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2021-11-20 06:13:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:50,185 INFO L93 Difference]: Finished difference Result 1099 states and 1645 transitions. [2021-11-20 06:13:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:13:50,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 270 [2021-11-20 06:13:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:50,192 INFO L225 Difference]: With dead ends: 1099 [2021-11-20 06:13:50,192 INFO L226 Difference]: Without dead ends: 573 [2021-11-20 06:13:50,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:13:50,197 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 908 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 5647 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:50,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 5647 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:13:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-20 06:13:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2021-11-20 06:13:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (226), 194 states have call predecessors, (226), 193 states have call successors, (226) [2021-11-20 06:13:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 823 transitions. [2021-11-20 06:13:50,230 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 823 transitions. Word has length 270 [2021-11-20 06:13:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:50,231 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 823 transitions. [2021-11-20 06:13:50,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2021-11-20 06:13:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 823 transitions. [2021-11-20 06:13:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-20 06:13:50,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:50,234 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:50,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:50,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:50,454 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash -950288979, now seen corresponding path program 3 times [2021-11-20 06:13:50,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:50,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970939559] [2021-11-20 06:13:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:50,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:50,515 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:50,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631900] [2021-11-20 06:13:50,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 06:13:50,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:50,516 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:50,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:13:51,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 06:13:51,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:51,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2021-11-20 06:13:51,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:51,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970939559] [2021-11-20 06:13:51,831 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:51,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631900] [2021-11-20 06:13:51,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:51,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:51,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:13:51,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151618021] [2021-11-20 06:13:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:51,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:13:51,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:13:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:13:51,836 INFO L87 Difference]: Start difference. First operand 555 states and 823 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-20 06:13:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:52,134 INFO L93 Difference]: Finished difference Result 1054 states and 1581 transitions. [2021-11-20 06:13:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:13:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 285 [2021-11-20 06:13:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:52,141 INFO L225 Difference]: With dead ends: 1054 [2021-11-20 06:13:52,141 INFO L226 Difference]: Without dead ends: 555 [2021-11-20 06:13:52,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:13:52,147 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:52,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3509 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:13:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-20 06:13:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-20 06:13:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (225), 194 states have call predecessors, (225), 193 states have call successors, (225) [2021-11-20 06:13:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 822 transitions. [2021-11-20 06:13:52,180 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 822 transitions. Word has length 285 [2021-11-20 06:13:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:52,181 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 822 transitions. [2021-11-20 06:13:52,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-20 06:13:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 822 transitions. [2021-11-20 06:13:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-20 06:13:52,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:52,184 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:52,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:52,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 06:13:52,410 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 490118554, now seen corresponding path program 4 times [2021-11-20 06:13:52,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:52,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096734291] [2021-11-20 06:13:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:52,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:52,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:52,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133908919] [2021-11-20 06:13:52,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 06:13:52,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:52,509 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:52,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:13:53,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 06:13:53,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:13:53,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:13:53,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-20 06:13:53,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:53,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096734291] [2021-11-20 06:13:53,793 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133908919] [2021-11-20 06:13:53,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133908919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:53,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:53,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:13:53,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025064183] [2021-11-20 06:13:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:53,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:13:53,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:13:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:13:53,795 INFO L87 Difference]: Start difference. First operand 555 states and 822 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:54,640 INFO L93 Difference]: Finished difference Result 1065 states and 1582 transitions. [2021-11-20 06:13:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:13:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 300 [2021-11-20 06:13:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:54,647 INFO L225 Difference]: With dead ends: 1065 [2021-11-20 06:13:54,648 INFO L226 Difference]: Without dead ends: 567 [2021-11-20 06:13:54,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:13:54,652 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 861 mSDsluCounter, 5089 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 5751 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:54,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 5751 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:13:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-20 06:13:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-20 06:13:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 330 states have (on average 1.2393939393939395) internal successors, (409), 333 states have internal predecessors, (409), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-20 06:13:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 839 transitions. [2021-11-20 06:13:54,693 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 839 transitions. Word has length 300 [2021-11-20 06:13:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:54,695 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 839 transitions. [2021-11-20 06:13:54,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-20 06:13:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 839 transitions. [2021-11-20 06:13:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:13:54,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:54,698 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:54,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:54,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:54,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1392122381, now seen corresponding path program 1 times [2021-11-20 06:13:54,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:54,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927668582] [2021-11-20 06:13:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:54,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:54,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:54,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839036165] [2021-11-20 06:13:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:54,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:54,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:54,982 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:54,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 06:13:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:13:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-20 06:13:56,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:56,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927668582] [2021-11-20 06:13:56,351 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839036165] [2021-11-20 06:13:56,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839036165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:56,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:56,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:13:56,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47334292] [2021-11-20 06:13:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:56,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:13:56,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:13:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:13:56,354 INFO L87 Difference]: Start difference. First operand 567 states and 839 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:13:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:56,834 INFO L93 Difference]: Finished difference Result 1137 states and 1710 transitions. [2021-11-20 06:13:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:13:56,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2021-11-20 06:13:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:56,841 INFO L225 Difference]: With dead ends: 1137 [2021-11-20 06:13:56,841 INFO L226 Difference]: Without dead ends: 603 [2021-11-20 06:13:56,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:13:56,847 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 21 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:56,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3595 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:13:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-20 06:13:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 575. [2021-11-20 06:13:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 338 states have (on average 1.2396449704142012) internal successors, (419), 341 states have internal predecessors, (419), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-20 06:13:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 849 transitions. [2021-11-20 06:13:56,887 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 849 transitions. Word has length 315 [2021-11-20 06:13:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:56,887 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 849 transitions. [2021-11-20 06:13:56,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:13:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 849 transitions. [2021-11-20 06:13:56,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:13:56,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:56,891 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:56,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:57,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:57,114 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1319987849, now seen corresponding path program 1 times [2021-11-20 06:13:57,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:57,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617052780] [2021-11-20 06:13:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:57,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:57,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:57,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251836430] [2021-11-20 06:13:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:57,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:57,198 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 06:13:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:13:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:13:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-20 06:13:58,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:13:58,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:58,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617052780] [2021-11-20 06:13:58,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:13:58,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251836430] [2021-11-20 06:13:58,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251836430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:58,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:58,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:13:58,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178425081] [2021-11-20 06:13:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:58,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:13:58,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:13:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:13:58,434 INFO L87 Difference]: Start difference. First operand 575 states and 849 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:13:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:58,490 INFO L93 Difference]: Finished difference Result 1125 states and 1680 transitions. [2021-11-20 06:13:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:13:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2021-11-20 06:13:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:58,497 INFO L225 Difference]: With dead ends: 1125 [2021-11-20 06:13:58,497 INFO L226 Difference]: Without dead ends: 583 [2021-11-20 06:13:58,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:13:58,502 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 3 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:58,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2275 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:13:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-20 06:13:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 579. [2021-11-20 06:13:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 342 states have (on average 1.236842105263158) internal successors, (423), 345 states have internal predecessors, (423), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-20 06:13:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 853 transitions. [2021-11-20 06:13:58,537 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 853 transitions. Word has length 315 [2021-11-20 06:13:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:58,538 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 853 transitions. [2021-11-20 06:13:58,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:13:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 853 transitions. [2021-11-20 06:13:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:13:58,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:58,541 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:58,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:13:58,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:13:58,764 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash 917678597, now seen corresponding path program 1 times [2021-11-20 06:13:58,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:58,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836447804] [2021-11-20 06:13:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:58,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:58,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:13:58,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498276632] [2021-11-20 06:13:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:58,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:13:58,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:58,835 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:13:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:13:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:59,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:13:59,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 06:14:00,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:00,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:00,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836447804] [2021-11-20 06:14:00,100 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498276632] [2021-11-20 06:14:00,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498276632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:00,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:00,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:14:00,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183172001] [2021-11-20 06:14:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:00,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:14:00,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:14:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:14:00,102 INFO L87 Difference]: Start difference. First operand 579 states and 853 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:00,285 INFO L93 Difference]: Finished difference Result 1167 states and 1730 transitions. [2021-11-20 06:14:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:14:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2021-11-20 06:14:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:00,292 INFO L225 Difference]: With dead ends: 1167 [2021-11-20 06:14:00,293 INFO L226 Difference]: Without dead ends: 642 [2021-11-20 06:14:00,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:14:00,297 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 90 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:00,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3893 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-20 06:14:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 585. [2021-11-20 06:14:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 345 states have (on average 1.2347826086956522) internal successors, (426), 348 states have internal predecessors, (426), 203 states have call successors, (203), 34 states have call predecessors, (203), 35 states have return successors, (233), 202 states have call predecessors, (233), 201 states have call successors, (233) [2021-11-20 06:14:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 862 transitions. [2021-11-20 06:14:00,366 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 862 transitions. Word has length 315 [2021-11-20 06:14:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:00,367 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 862 transitions. [2021-11-20 06:14:00,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 862 transitions. [2021-11-20 06:14:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:14:00,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:00,371 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:00,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:00,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 06:14:00,598 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:00,599 INFO L85 PathProgramCache]: Analyzing trace with hash 185711171, now seen corresponding path program 1 times [2021-11-20 06:14:00,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:00,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481858098] [2021-11-20 06:14:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:00,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:00,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:00,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682795007] [2021-11-20 06:14:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:00,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:00,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:00,662 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:00,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 06:14:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3411 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 06:14:01,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-20 06:14:01,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:01,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:01,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481858098] [2021-11-20 06:14:01,831 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682795007] [2021-11-20 06:14:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682795007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:01,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:01,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:14:01,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854776611] [2021-11-20 06:14:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:01,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:14:01,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:14:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:01,834 INFO L87 Difference]: Start difference. First operand 585 states and 862 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-20 06:14:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:02,118 INFO L93 Difference]: Finished difference Result 1130 states and 1668 transitions. [2021-11-20 06:14:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:14:02,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 315 [2021-11-20 06:14:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:02,124 INFO L225 Difference]: With dead ends: 1130 [2021-11-20 06:14:02,125 INFO L226 Difference]: Without dead ends: 585 [2021-11-20 06:14:02,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:14:02,129 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:02,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2787 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:14:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-11-20 06:14:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2021-11-20 06:14:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 345 states have (on average 1.2318840579710144) internal successors, (425), 348 states have internal predecessors, (425), 203 states have call successors, (203), 34 states have call predecessors, (203), 35 states have return successors, (233), 202 states have call predecessors, (233), 201 states have call successors, (233) [2021-11-20 06:14:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 861 transitions. [2021-11-20 06:14:02,165 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 861 transitions. Word has length 315 [2021-11-20 06:14:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:02,165 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 861 transitions. [2021-11-20 06:14:02,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-20 06:14:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 861 transitions. [2021-11-20 06:14:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:14:02,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:02,169 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:02,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:02,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:14:02,382 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash -341682879, now seen corresponding path program 1 times [2021-11-20 06:14:02,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:02,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140742440] [2021-11-20 06:14:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:02,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:02,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:02,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021121634] [2021-11-20 06:14:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:02,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:02,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:02,442 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:02,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 06:14:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:03,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:14:03,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-11-20 06:14:03,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:03,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:03,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140742440] [2021-11-20 06:14:03,645 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:03,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021121634] [2021-11-20 06:14:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021121634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:03,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:03,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:14:03,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830038573] [2021-11-20 06:14:03,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:03,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:14:03,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:14:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:14:03,648 INFO L87 Difference]: Start difference. First operand 585 states and 861 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:03,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:03,819 INFO L93 Difference]: Finished difference Result 1110 states and 1636 transitions. [2021-11-20 06:14:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:14:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2021-11-20 06:14:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:03,825 INFO L225 Difference]: With dead ends: 1110 [2021-11-20 06:14:03,826 INFO L226 Difference]: Without dead ends: 579 [2021-11-20 06:14:03,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:14:03,830 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 94 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 4369 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:03,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 4369 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-20 06:14:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2021-11-20 06:14:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 342 states have (on average 1.2309941520467835) internal successors, (421), 345 states have internal predecessors, (421), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-20 06:14:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 851 transitions. [2021-11-20 06:14:03,866 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 851 transitions. Word has length 315 [2021-11-20 06:14:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:03,866 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 851 transitions. [2021-11-20 06:14:03,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 851 transitions. [2021-11-20 06:14:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-20 06:14:03,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:03,870 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:03,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:04,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:14:04,086 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash -640756351, now seen corresponding path program 1 times [2021-11-20 06:14:04,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:04,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090837745] [2021-11-20 06:14:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:04,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:04,141 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:04,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125647782] [2021-11-20 06:14:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:04,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:04,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:04,146 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:04,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 06:14:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:04,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 06:14:04,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 3 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-11-20 06:14:05,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:14:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-20 06:14:06,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:06,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090837745] [2021-11-20 06:14:06,104 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:06,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125647782] [2021-11-20 06:14:06,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125647782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:14:06,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:14:06,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-20 06:14:06,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729200640] [2021-11-20 06:14:06,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:14:06,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:14:06,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:14:06,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:14:06,107 INFO L87 Difference]: Start difference. First operand 579 states and 851 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-20 06:14:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:06,340 INFO L93 Difference]: Finished difference Result 1185 states and 1754 transitions. [2021-11-20 06:14:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:14:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) Word has length 315 [2021-11-20 06:14:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:06,348 INFO L225 Difference]: With dead ends: 1185 [2021-11-20 06:14:06,348 INFO L226 Difference]: Without dead ends: 660 [2021-11-20 06:14:06,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:14:06,353 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 139 mSDsluCounter, 6440 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 7265 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:06,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 7265 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-20 06:14:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2021-11-20 06:14:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 385 states have (on average 1.2337662337662338) internal successors, (475), 389 states have internal predecessors, (475), 231 states have call successors, (231), 35 states have call predecessors, (231), 37 states have return successors, (265), 230 states have call predecessors, (265), 229 states have call successors, (265) [2021-11-20 06:14:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 971 transitions. [2021-11-20 06:14:06,396 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 971 transitions. Word has length 315 [2021-11-20 06:14:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:06,397 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 971 transitions. [2021-11-20 06:14:06,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-20 06:14:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 971 transitions. [2021-11-20 06:14:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-20 06:14:06,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:06,401 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:06,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:06,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:14:06,623 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1237677759, now seen corresponding path program 1 times [2021-11-20 06:14:06,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:06,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925483612] [2021-11-20 06:14:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:06,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:06,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566310817] [2021-11-20 06:14:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:06,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:06,678 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:06,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 06:14:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:07,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 3451 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-20 06:14:07,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:07,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 06:14:07,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-20 06:14:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-11-20 06:14:08,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:08,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925483612] [2021-11-20 06:14:08,244 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566310817] [2021-11-20 06:14:08,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566310817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:08,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:08,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:14:08,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082387853] [2021-11-20 06:14:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:14:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:14:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:14:08,247 INFO L87 Difference]: Start difference. First operand 655 states and 971 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-20 06:14:09,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:09,892 INFO L93 Difference]: Finished difference Result 1363 states and 2101 transitions. [2021-11-20 06:14:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:14:09,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 326 [2021-11-20 06:14:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:09,901 INFO L225 Difference]: With dead ends: 1363 [2021-11-20 06:14:09,902 INFO L226 Difference]: Without dead ends: 741 [2021-11-20 06:14:09,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:14:09,908 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 103 mSDsluCounter, 6829 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 7551 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:09,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 7551 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 06:14:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-20 06:14:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 692. [2021-11-20 06:14:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 421 states have (on average 1.2399049881235154) internal successors, (522), 424 states have internal predecessors, (522), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-20 06:14:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1055 transitions. [2021-11-20 06:14:09,961 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1055 transitions. Word has length 326 [2021-11-20 06:14:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:09,961 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1055 transitions. [2021-11-20 06:14:09,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-20 06:14:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1055 transitions. [2021-11-20 06:14:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-20 06:14:09,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:09,965 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:10,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:10,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:14:10,190 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash -963523583, now seen corresponding path program 1 times [2021-11-20 06:14:10,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:10,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269394723] [2021-11-20 06:14:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:10,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:10,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:10,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376474006] [2021-11-20 06:14:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:10,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:10,250 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:10,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 06:14:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:10,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:14:10,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-20 06:14:11,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:11,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269394723] [2021-11-20 06:14:11,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:11,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376474006] [2021-11-20 06:14:11,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376474006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:11,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:11,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:11,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759775369] [2021-11-20 06:14:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:11,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:11,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:11,375 INFO L87 Difference]: Start difference. First operand 692 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:14:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:11,428 INFO L93 Difference]: Finished difference Result 1354 states and 2151 transitions. [2021-11-20 06:14:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:14:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2021-11-20 06:14:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:11,437 INFO L225 Difference]: With dead ends: 1354 [2021-11-20 06:14:11,437 INFO L226 Difference]: Without dead ends: 695 [2021-11-20 06:14:11,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:11,445 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 7 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:11,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:14:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-11-20 06:14:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 692. [2021-11-20 06:14:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 421 states have (on average 1.2375296912114013) internal successors, (521), 424 states have internal predecessors, (521), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-20 06:14:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1054 transitions. [2021-11-20 06:14:11,493 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1054 transitions. Word has length 326 [2021-11-20 06:14:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:11,494 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1054 transitions. [2021-11-20 06:14:11,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:14:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1054 transitions. [2021-11-20 06:14:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-20 06:14:11,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:11,498 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:11,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:11,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:11,715 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash 769275841, now seen corresponding path program 1 times [2021-11-20 06:14:11,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:11,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071534825] [2021-11-20 06:14:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:11,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:11,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:11,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952150070] [2021-11-20 06:14:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:11,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:11,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:11,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 06:14:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:12,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 06:14:12,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:12,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-20 06:14:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-20 06:14:13,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:13,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:13,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071534825] [2021-11-20 06:14:13,103 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:13,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952150070] [2021-11-20 06:14:13,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952150070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:13,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:13,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:14:13,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340033034] [2021-11-20 06:14:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:13,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:14:13,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:14:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:14:13,106 INFO L87 Difference]: Start difference. First operand 692 states and 1054 transitions. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-20 06:14:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:14,459 INFO L93 Difference]: Finished difference Result 1391 states and 2189 transitions. [2021-11-20 06:14:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:14:14,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 330 [2021-11-20 06:14:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:14,468 INFO L225 Difference]: With dead ends: 1391 [2021-11-20 06:14:14,468 INFO L226 Difference]: Without dead ends: 732 [2021-11-20 06:14:14,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:14:14,476 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 77 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 6119 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:14,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 6119 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:14:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-20 06:14:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 688. [2021-11-20 06:14:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 416 states have (on average 1.2259615384615385) internal successors, (510), 418 states have internal predecessors, (510), 231 states have call successors, (231), 35 states have call predecessors, (231), 39 states have return successors, (339), 234 states have call predecessors, (339), 229 states have call successors, (339) [2021-11-20 06:14:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1080 transitions. [2021-11-20 06:14:14,531 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1080 transitions. Word has length 330 [2021-11-20 06:14:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:14,531 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 1080 transitions. [2021-11-20 06:14:14,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-20 06:14:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1080 transitions. [2021-11-20 06:14:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-20 06:14:14,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:14,535 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:14,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:14,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:14,751 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2054816897, now seen corresponding path program 1 times [2021-11-20 06:14:14,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:14,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513728757] [2021-11-20 06:14:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:14,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:14,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:14,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106099451] [2021-11-20 06:14:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:14,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:14,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:14,803 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:14,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 06:14:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:15,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 3471 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:14:15,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-20 06:14:15,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:15,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513728757] [2021-11-20 06:14:15,984 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106099451] [2021-11-20 06:14:15,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106099451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:15,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:15,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:14:15,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078278323] [2021-11-20 06:14:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:15,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:14:15,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:14:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:15,989 INFO L87 Difference]: Start difference. First operand 688 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:14:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:16,415 INFO L93 Difference]: Finished difference Result 1348 states and 2239 transitions. [2021-11-20 06:14:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:14:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 330 [2021-11-20 06:14:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:16,423 INFO L225 Difference]: With dead ends: 1348 [2021-11-20 06:14:16,423 INFO L226 Difference]: Without dead ends: 693 [2021-11-20 06:14:16,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:14:16,431 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 16 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:16,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 2942 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:14:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-20 06:14:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 689. [2021-11-20 06:14:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 417 states have (on average 1.225419664268585) internal successors, (511), 419 states have internal predecessors, (511), 231 states have call successors, (231), 35 states have call predecessors, (231), 39 states have return successors, (339), 234 states have call predecessors, (339), 229 states have call successors, (339) [2021-11-20 06:14:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1081 transitions. [2021-11-20 06:14:16,485 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1081 transitions. Word has length 330 [2021-11-20 06:14:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:16,485 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1081 transitions. [2021-11-20 06:14:16,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:14:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1081 transitions. [2021-11-20 06:14:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-20 06:14:16,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:16,489 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:16,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:16,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:16,710 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash -932941941, now seen corresponding path program 1 times [2021-11-20 06:14:16,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:16,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122080331] [2021-11-20 06:14:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:16,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:16,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:16,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375403732] [2021-11-20 06:14:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:16,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:16,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:16,763 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:16,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 06:14:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:17,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 3427 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:14:17,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-11-20 06:14:17,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:17,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122080331] [2021-11-20 06:14:17,889 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375403732] [2021-11-20 06:14:17,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375403732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:17,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:17,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:14:17,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954229618] [2021-11-20 06:14:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:17,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:14:17,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:14:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:14:17,891 INFO L87 Difference]: Start difference. First operand 689 states and 1081 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:18,035 INFO L93 Difference]: Finished difference Result 1251 states and 1961 transitions. [2021-11-20 06:14:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:14:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 319 [2021-11-20 06:14:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:18,061 INFO L225 Difference]: With dead ends: 1251 [2021-11-20 06:14:18,061 INFO L226 Difference]: Without dead ends: 616 [2021-11-20 06:14:18,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:14:18,067 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 86 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:18,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 3613 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-20 06:14:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-11-20 06:14:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 376 states have (on average 1.2180851063829787) internal successors, (458), 378 states have internal predecessors, (458), 200 states have call successors, (200), 34 states have call predecessors, (200), 38 states have return successors, (300), 203 states have call predecessors, (300), 198 states have call successors, (300) [2021-11-20 06:14:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 958 transitions. [2021-11-20 06:14:18,147 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 958 transitions. Word has length 319 [2021-11-20 06:14:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:18,148 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 958 transitions. [2021-11-20 06:14:18,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-20 06:14:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 958 transitions. [2021-11-20 06:14:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-20 06:14:18,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:18,151 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:18,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:18,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-20 06:14:18,377 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1385037761, now seen corresponding path program 1 times [2021-11-20 06:14:18,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:18,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020939021] [2021-11-20 06:14:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:18,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:18,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:18,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268123207] [2021-11-20 06:14:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:18,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:18,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:18,434 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:18,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 06:14:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:19,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-20 06:14:19,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:19,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:14:19,755 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:14:19,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:14:21,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:14:21,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:14:37,113 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-20 06:14:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 336 proven. 22 refuted. 0 times theorem prover too weak. 348 trivial. 3 not checked. [2021-11-20 06:14:43,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:14:44,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:44,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020939021] [2021-11-20 06:14:44,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:14:44,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268123207] [2021-11-20 06:14:44,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268123207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:14:44,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:14:44,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-11-20 06:14:44,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150003932] [2021-11-20 06:14:44,337 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:14:44,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 06:14:44,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 06:14:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=871, Unknown=11, NotChecked=60, Total=1056 [2021-11-20 06:14:44,339 INFO L87 Difference]: Start difference. First operand 616 states and 958 transitions. Second operand has 32 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 12 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-11-20 06:14:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:54,285 INFO L93 Difference]: Finished difference Result 1456 states and 2401 transitions. [2021-11-20 06:14:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 06:14:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 12 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) Word has length 330 [2021-11-20 06:14:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:54,296 INFO L225 Difference]: With dead ends: 1456 [2021-11-20 06:14:54,297 INFO L226 Difference]: Without dead ends: 873 [2021-11-20 06:14:54,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 509 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=172, Invalid=1459, Unknown=13, NotChecked=78, Total=1722 [2021-11-20 06:14:54,301 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 523 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 5229 SdHoareTripleChecker+Invalid, 10777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6866 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:54,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 5229 Invalid, 10777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [868 Valid, 3043 Invalid, 0 Unknown, 6866 Unchecked, 3.3s Time] [2021-11-20 06:14:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-20 06:14:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 674. [2021-11-20 06:14:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 420 states have (on average 1.2142857142857142) internal successors, (510), 426 states have internal predecessors, (510), 205 states have call successors, (205), 37 states have call predecessors, (205), 47 states have return successors, (397), 210 states have call predecessors, (397), 203 states have call successors, (397) [2021-11-20 06:14:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1112 transitions. [2021-11-20 06:14:54,384 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1112 transitions. Word has length 330 [2021-11-20 06:14:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:54,384 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 1112 transitions. [2021-11-20 06:14:54,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 12 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-11-20 06:14:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1112 transitions. [2021-11-20 06:14:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-20 06:14:54,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:54,389 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:54,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-20 06:14:54,611 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash 823212293, now seen corresponding path program 1 times [2021-11-20 06:14:54,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:54,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787921348] [2021-11-20 06:14:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:54,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:14:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:14:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:14:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:14:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:14:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:14:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:14:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:14:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:14:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:14:54,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787921348] [2021-11-20 06:14:54,926 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 06:14:54,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719260406] [2021-11-20 06:14:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:54,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:54,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:54,928 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:54,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 06:14:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:14:55,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-20 06:14:56,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:14:56,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719260406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:56,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:56,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:56,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714307175] [2021-11-20 06:14:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:56,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:56,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:56,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:56,338 INFO L87 Difference]: Start difference. First operand 674 states and 1112 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:14:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:56,380 INFO L93 Difference]: Finished difference Result 1324 states and 2192 transitions. [2021-11-20 06:14:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:56,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 332 [2021-11-20 06:14:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:56,387 INFO L225 Difference]: With dead ends: 1324 [2021-11-20 06:14:56,388 INFO L226 Difference]: Without dead ends: 668 [2021-11-20 06:14:56,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:56,393 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 0 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:56,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1515 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:14:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-20 06:14:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2021-11-20 06:14:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 417 states have (on average 1.2134292565947242) internal successors, (506), 422 states have internal predecessors, (506), 203 states have call successors, (203), 37 states have call predecessors, (203), 46 states have return successors, (392), 208 states have call predecessors, (392), 201 states have call successors, (392) [2021-11-20 06:14:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1101 transitions. [2021-11-20 06:14:56,460 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1101 transitions. Word has length 332 [2021-11-20 06:14:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:56,460 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1101 transitions. [2021-11-20 06:14:56,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:14:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1101 transitions. [2021-11-20 06:14:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-20 06:14:56,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:56,465 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:56,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:14:56,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 06:14:56,691 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash -518784376, now seen corresponding path program 1 times [2021-11-20 06:14:56,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:56,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223076768] [2021-11-20 06:14:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:56,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:56,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:14:56,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108235575] [2021-11-20 06:14:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:56,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:14:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:14:56,747 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:14:56,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 06:14:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:57,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-20 06:14:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:14:57,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:14:58,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:14:58,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-20 06:14:58,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 06:14:58,580 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:14:58,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:14:58,671 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 06:14:58,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-20 06:15:02,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:15:02,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:15:08,556 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-20 06:15:24,952 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-20 06:15:36,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:15:36,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2021-11-20 06:15:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 337 proven. 22 refuted. 0 times theorem prover too weak. 351 trivial. 3 not checked. [2021-11-20 06:15:37,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:15:38,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223076768] [2021-11-20 06:15:38,428 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:15:38,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108235575] [2021-11-20 06:15:38,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108235575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:15:38,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:15:38,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-11-20 06:15:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529753662] [2021-11-20 06:15:38,429 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:15:38,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-20 06:15:38,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-20 06:15:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=875, Unknown=16, NotChecked=122, Total=1122 [2021-11-20 06:15:38,431 INFO L87 Difference]: Start difference. First operand 668 states and 1101 transitions. Second operand has 33 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 14 states have call successors, (41), 9 states have call predecessors, (41), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) [2021-11-20 06:16:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:20,169 INFO L93 Difference]: Finished difference Result 1560 states and 2619 transitions. [2021-11-20 06:16:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:16:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 14 states have call successors, (41), 9 states have call predecessors, (41), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) Word has length 336 [2021-11-20 06:16:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:20,180 INFO L225 Difference]: With dead ends: 1560 [2021-11-20 06:16:20,180 INFO L226 Difference]: Without dead ends: 943 [2021-11-20 06:16:20,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 514 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=168, Invalid=1530, Unknown=32, NotChecked=162, Total=1892 [2021-11-20 06:16:20,190 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 492 mSDsluCounter, 5146 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 5973 SdHoareTripleChecker+Invalid, 12992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8522 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:20,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 5973 Invalid, 12992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 3884 Invalid, 0 Unknown, 8522 Unchecked, 3.5s Time] [2021-11-20 06:16:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-11-20 06:16:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 702. [2021-11-20 06:16:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 440 states have (on average 1.2113636363636364) internal successors, (533), 447 states have internal predecessors, (533), 207 states have call successors, (207), 42 states have call predecessors, (207), 53 states have return successors, (400), 212 states have call predecessors, (400), 205 states have call successors, (400) [2021-11-20 06:16:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1140 transitions. [2021-11-20 06:16:20,275 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1140 transitions. Word has length 336 [2021-11-20 06:16:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:20,276 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1140 transitions. [2021-11-20 06:16:20,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.066666666666666) internal successors, (152), 30 states have internal predecessors, (152), 14 states have call successors, (41), 9 states have call predecessors, (41), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) [2021-11-20 06:16:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1140 transitions. [2021-11-20 06:16:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-11-20 06:16:20,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:20,280 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:20,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:20,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 06:16:20,504 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash -302512242, now seen corresponding path program 1 times [2021-11-20 06:16:20,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:20,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308130313] [2021-11-20 06:16:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:20,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:20,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:16:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763344557] [2021-11-20 06:16:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:20,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:20,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:20,561 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:20,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-20 06:16:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:21,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-20 06:16:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 257 proven. 1 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2021-11-20 06:16:21,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2021-11-20 06:16:23,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:16:23,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308130313] [2021-11-20 06:16:23,217 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:16:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763344557] [2021-11-20 06:16:23,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763344557] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:16:23,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:16:23,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2021-11-20 06:16:23,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574277990] [2021-11-20 06:16:23,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:16:23,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 06:16:23,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:16:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 06:16:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:16:23,221 INFO L87 Difference]: Start difference. First operand 702 states and 1140 transitions. Second operand has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 5 states have call successors, (40) [2021-11-20 06:16:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:24,233 INFO L93 Difference]: Finished difference Result 1320 states and 2217 transitions. [2021-11-20 06:16:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:16:24,233 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 5 states have call successors, (40) Word has length 364 [2021-11-20 06:16:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:24,241 INFO L225 Difference]: With dead ends: 1320 [2021-11-20 06:16:24,242 INFO L226 Difference]: Without dead ends: 713 [2021-11-20 06:16:24,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:16:24,245 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 15 mSDsluCounter, 12765 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13524 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:24,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 13524 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:16:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-20 06:16:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 707. [2021-11-20 06:16:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 444 states have (on average 1.2094594594594594) internal successors, (537), 452 states have internal predecessors, (537), 207 states have call successors, (207), 42 states have call predecessors, (207), 54 states have return successors, (429), 212 states have call predecessors, (429), 205 states have call successors, (429) [2021-11-20 06:16:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1173 transitions. [2021-11-20 06:16:24,316 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1173 transitions. Word has length 364 [2021-11-20 06:16:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:24,317 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1173 transitions. [2021-11-20 06:16:24,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 5 states have call successors, (40) [2021-11-20 06:16:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1173 transitions. [2021-11-20 06:16:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-20 06:16:24,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:24,321 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:24,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:24,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:24,534 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:24,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:24,535 INFO L85 PathProgramCache]: Analyzing trace with hash 789914566, now seen corresponding path program 1 times [2021-11-20 06:16:24,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:16:24,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280249297] [2021-11-20 06:16:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:24,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:16:24,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:16:24,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717610296] [2021-11-20 06:16:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:24,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:16:24,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:24,593 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:16:24,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-20 06:16:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:25,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-20 06:16:25,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:27,842 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))))) is different from true [2021-11-20 06:16:27,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 06:16:28,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:17:33,381 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 06:17:35,473 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))))) is different from true [2021-11-20 06:17:35,618 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:17:35,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2021-11-20 06:17:37,806 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_210| Int) (v_DerPreprocessor_1 Int)) (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_210| (store (select |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_210|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_DerPreprocessor_1)))) (and (= |c_#memory_$Pointer$.base| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (and (= .cse1 0) (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|)) (not (= (select (select |c_#memory_$Pointer$.offset| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0))))))) is different from true [2021-11-20 06:17:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:17:38,819 INFO L354 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2021-11-20 06:17:38,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 76 [2021-11-20 06:20:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 478 proven. 9 refuted. 0 times theorem prover too weak. 179 trivial. 57 not checked. [2021-11-20 06:20:04,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:20:07,361 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_228| Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (+ 32 |c_aws_priority_queue_push_ref_aws_array_list_push_back_~list#1.offset|))) (or (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_228| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_228|) 0 v_DerPreprocessor_2)) |c_aws_priority_queue_push_ref_aws_array_list_push_back_~list#1.base|) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_228| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_228|) 0 v_DerPreprocessor_3)) |c_aws_priority_queue_push_ref_aws_array_list_push_back_~list#1.base|) .cse0) 0))))) is different from false [2021-11-20 06:20:07,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:20:07,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280249297] [2021-11-20 06:20:07,365 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:20:07,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717610296] [2021-11-20 06:20:07,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717610296] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:20:07,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:20:07,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-11-20 06:20:07,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107614258] [2021-11-20 06:20:07,368 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:20:07,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 06:20:07,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 06:20:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=728, Unknown=59, NotChecked=300, Total=1190 [2021-11-20 06:20:07,370 INFO L87 Difference]: Start difference. First operand 707 states and 1173 transitions. Second operand has 34 states, 30 states have (on average 5.733333333333333) internal successors, (172), 31 states have internal predecessors, (172), 16 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) [2021-11-20 06:20:11,085 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)))) is different from true [2021-11-20 06:20:25,538 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))))))) is different from true [2021-11-20 06:21:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:37,702 INFO L93 Difference]: Finished difference Result 1568 states and 2796 transitions. [2021-11-20 06:21:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:21:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 5.733333333333333) internal successors, (172), 31 states have internal predecessors, (172), 16 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) Word has length 340 [2021-11-20 06:21:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:37,715 INFO L225 Difference]: With dead ends: 1568 [2021-11-20 06:21:37,715 INFO L226 Difference]: Without dead ends: 952 [2021-11-20 06:21:37,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 379 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 293.4s TimeCoverageRelationStatistics Valid=162, Invalid=1263, Unknown=85, NotChecked=560, Total=2070 [2021-11-20 06:21:37,721 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 305 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 8868 SdHoareTripleChecker+Invalid, 13827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9770 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:37,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 8868 Invalid, 13827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [271 Valid, 3786 Invalid, 0 Unknown, 9770 Unchecked, 14.2s Time] [2021-11-20 06:21:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-11-20 06:21:37,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 742. [2021-11-20 06:21:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 471 states have (on average 1.2059447983014862) internal successors, (568), 481 states have internal predecessors, (568), 211 states have call successors, (211), 43 states have call predecessors, (211), 58 states have return successors, (525), 217 states have call predecessors, (525), 209 states have call successors, (525) [2021-11-20 06:21:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1304 transitions. [2021-11-20 06:21:37,916 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1304 transitions. Word has length 340 [2021-11-20 06:21:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:37,916 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1304 transitions. [2021-11-20 06:21:37,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 5.733333333333333) internal successors, (172), 31 states have internal predecessors, (172), 16 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) [2021-11-20 06:21:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1304 transitions. [2021-11-20 06:21:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-20 06:21:37,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:37,922 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:37,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:38,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-20 06:21:38,138 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 804489745, now seen corresponding path program 1 times [2021-11-20 06:21:38,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:38,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701428654] [2021-11-20 06:21:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:38,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:38,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:21:38,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799491546] [2021-11-20 06:21:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:38,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:38,203 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:38,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 06:21:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:39,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:21:39,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-20 06:21:40,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:21:40,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:40,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701428654] [2021-11-20 06:21:40,545 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:21:40,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799491546] [2021-11-20 06:21:40,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799491546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:40,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:40,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:21:40,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371556053] [2021-11-20 06:21:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:40,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:21:40,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:21:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:21:40,548 INFO L87 Difference]: Start difference. First operand 742 states and 1304 transitions. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 9 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 06:21:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:41,178 INFO L93 Difference]: Finished difference Result 1439 states and 2581 transitions. [2021-11-20 06:21:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:21:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 9 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) Word has length 344 [2021-11-20 06:21:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:41,188 INFO L225 Difference]: With dead ends: 1439 [2021-11-20 06:21:41,188 INFO L226 Difference]: Without dead ends: 770 [2021-11-20 06:21:41,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:21:41,192 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 16 mSDsluCounter, 7936 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8733 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:41,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8733 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:21:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-11-20 06:21:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 742. [2021-11-20 06:21:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 472 states have (on average 1.2055084745762712) internal successors, (569), 479 states have internal predecessors, (569), 211 states have call successors, (211), 43 states have call predecessors, (211), 57 states have return successors, (490), 219 states have call predecessors, (490), 209 states have call successors, (490) [2021-11-20 06:21:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1270 transitions. [2021-11-20 06:21:41,280 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1270 transitions. Word has length 344 [2021-11-20 06:21:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:41,281 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1270 transitions. [2021-11-20 06:21:41,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 9 states have internal predecessors, (137), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 06:21:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1270 transitions. [2021-11-20 06:21:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-20 06:21:41,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:41,285 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:41,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:41,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 06:21:41,510 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -883582013, now seen corresponding path program 1 times [2021-11-20 06:21:41,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:41,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694872006] [2021-11-20 06:21:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:41,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:41,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:21:41,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300945604] [2021-11-20 06:21:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:41,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:41,573 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:41,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-20 06:21:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:42,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 3466 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:21:42,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-20 06:21:43,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:21:43,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:43,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694872006] [2021-11-20 06:21:43,680 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:21:43,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300945604] [2021-11-20 06:21:43,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300945604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:43,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:43,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:43,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893056926] [2021-11-20 06:21:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:43,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:43,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:43,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:43,690 INFO L87 Difference]: Start difference. First operand 742 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:21:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:45,102 INFO L93 Difference]: Finished difference Result 1407 states and 2514 transitions. [2021-11-20 06:21:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:45,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 334 [2021-11-20 06:21:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:45,112 INFO L225 Difference]: With dead ends: 1407 [2021-11-20 06:21:45,112 INFO L226 Difference]: Without dead ends: 738 [2021-11-20 06:21:45,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:45,118 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 7 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:45,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2967 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:21:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-20 06:21:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2021-11-20 06:21:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 469 states have (on average 1.2025586353944564) internal successors, (564), 475 states have internal predecessors, (564), 211 states have call successors, (211), 43 states have call predecessors, (211), 56 states have return successors, (453), 219 states have call predecessors, (453), 209 states have call successors, (453) [2021-11-20 06:21:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1228 transitions. [2021-11-20 06:21:45,195 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1228 transitions. Word has length 334 [2021-11-20 06:21:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:45,196 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1228 transitions. [2021-11-20 06:21:45,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:21:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1228 transitions. [2021-11-20 06:21:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-20 06:21:45,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:45,201 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:45,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-20 06:21:45,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-20 06:21:45,414 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1787064743, now seen corresponding path program 2 times [2021-11-20 06:21:45,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:45,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204543015] [2021-11-20 06:21:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:45,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:45,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:21:45,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37064113] [2021-11-20 06:21:45,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:21:45,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:45,474 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:45,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-20 06:21:46,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:21:46,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:21:46,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 3498 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-20 06:21:46,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 368 proven. 1 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 06:21:47,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 91 proven. 35 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-20 06:21:51,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204543015] [2021-11-20 06:21:51,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:21:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37064113] [2021-11-20 06:21:51,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37064113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:21:51,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:21:51,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 24 [2021-11-20 06:21:51,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760306553] [2021-11-20 06:21:51,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:21:51,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 06:21:51,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 06:21:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-11-20 06:21:51,938 INFO L87 Difference]: Start difference. First operand 738 states and 1228 transitions. Second operand has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2021-11-20 06:21:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:56,738 INFO L93 Difference]: Finished difference Result 1377 states and 2318 transitions. [2021-11-20 06:21:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:21:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) Word has length 344 [2021-11-20 06:21:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:56,748 INFO L225 Difference]: With dead ends: 1377 [2021-11-20 06:21:56,748 INFO L226 Difference]: Without dead ends: 740 [2021-11-20 06:21:56,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 663 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:21:56,754 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 14 mSDsluCounter, 13476 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14235 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:56,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 14235 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:21:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-20 06:21:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 735. [2021-11-20 06:21:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 467 states have (on average 1.2034261241970021) internal successors, (562), 472 states have internal predecessors, (562), 211 states have call successors, (211), 43 states have call predecessors, (211), 55 states have return successors, (415), 219 states have call predecessors, (415), 209 states have call successors, (415) [2021-11-20 06:21:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1188 transitions. [2021-11-20 06:21:56,827 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1188 transitions. Word has length 344 [2021-11-20 06:21:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:56,828 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1188 transitions. [2021-11-20 06:21:56,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 7.2) internal successors, (144), 17 states have internal predecessors, (144), 6 states have call successors, (43), 3 states have call predecessors, (43), 8 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2021-11-20 06:21:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1188 transitions. [2021-11-20 06:21:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-20 06:21:56,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:56,833 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:56,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:57,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:57,052 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash -839866289, now seen corresponding path program 2 times [2021-11-20 06:21:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:57,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478491925] [2021-11-20 06:21:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:57,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:57,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:21:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793600660] [2021-11-20 06:21:57,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:21:57,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:57,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:57,106 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:57,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-20 06:21:57,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:21:57,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:21:57,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-20 06:21:57,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:01,739 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 06:22:03,842 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))))) is different from true [2021-11-20 06:22:04,154 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:22:04,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 50 [2021-11-20 06:22:04,288 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:22:04,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 48 [2021-11-20 06:22:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:07,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-20 06:22:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:22:07,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2021-11-20 06:22:07,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-11-20 06:23:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 447 proven. 55 refuted. 12 times theorem prover too weak. 184 trivial. 19 not checked. [2021-11-20 06:23:08,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:23:13,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:23:13,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478491925] [2021-11-20 06:23:13,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:23:13,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793600660] [2021-11-20 06:23:13,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793600660] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:23:13,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:23:13,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-11-20 06:23:13,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481768260] [2021-11-20 06:23:13,744 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:23:13,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 06:23:13,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 06:23:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=760, Unknown=24, NotChecked=114, Total=992 [2021-11-20 06:23:13,746 INFO L87 Difference]: Start difference. First operand 735 states and 1188 transitions. Second operand has 31 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 15 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 13 states have call predecessors, (42), 15 states have call successors, (42) [2021-11-20 06:24:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:07,260 INFO L93 Difference]: Finished difference Result 1800 states and 3033 transitions. [2021-11-20 06:24:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:24:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 15 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 13 states have call predecessors, (42), 15 states have call successors, (42) Word has length 344 [2021-11-20 06:24:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:07,277 INFO L225 Difference]: With dead ends: 1800 [2021-11-20 06:24:07,277 INFO L226 Difference]: Without dead ends: 1155 [2021-11-20 06:24:07,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 420 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 74.2s TimeCoverageRelationStatistics Valid=133, Invalid=1111, Unknown=24, NotChecked=138, Total=1406 [2021-11-20 06:24:07,284 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 462 mSDsluCounter, 8905 mSDsCounter, 0 mSdLazyCounter, 7156 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 9765 SdHoareTripleChecker+Invalid, 14774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 7156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7022 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:07,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 9765 Invalid, 14774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [596 Valid, 7156 Invalid, 0 Unknown, 7022 Unchecked, 45.3s Time] [2021-11-20 06:24:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2021-11-20 06:24:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 872. [2021-11-20 06:24:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 574 states have (on average 1.1986062717770034) internal successors, (688), 583 states have internal predecessors, (688), 226 states have call successors, (226), 52 states have call predecessors, (226), 70 states have return successors, (503), 236 states have call predecessors, (503), 224 states have call successors, (503) [2021-11-20 06:24:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1417 transitions. [2021-11-20 06:24:07,381 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1417 transitions. Word has length 344 [2021-11-20 06:24:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:07,382 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1417 transitions. [2021-11-20 06:24:07,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 15 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (42), 13 states have call predecessors, (42), 15 states have call successors, (42) [2021-11-20 06:24:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1417 transitions. [2021-11-20 06:24:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-20 06:24:07,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:07,387 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:07,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:07,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:07,603 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1642392416, now seen corresponding path program 1 times [2021-11-20 06:24:07,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:07,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520930192] [2021-11-20 06:24:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:07,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:07,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:24:07,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757380710] [2021-11-20 06:24:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:07,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:07,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:07,664 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:07,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-20 06:24:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:08,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 06:24:08,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 428 proven. 11 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 06:24:11,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 82 proven. 61 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-20 06:24:20,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:20,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520930192] [2021-11-20 06:24:20,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:24:20,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757380710] [2021-11-20 06:24:20,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757380710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:20,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:24:20,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2021-11-20 06:24:20,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943442271] [2021-11-20 06:24:20,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:20,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:24:20,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:24:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:24:20,538 INFO L87 Difference]: Start difference. First operand 872 states and 1417 transitions. Second operand has 30 states, 26 states have (on average 6.846153846153846) internal successors, (178), 21 states have internal predecessors, (178), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) [2021-11-20 06:24:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:30,690 INFO L93 Difference]: Finished difference Result 1690 states and 2797 transitions. [2021-11-20 06:24:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:24:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 6.846153846153846) internal successors, (178), 21 states have internal predecessors, (178), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) Word has length 350 [2021-11-20 06:24:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:30,705 INFO L225 Difference]: With dead ends: 1690 [2021-11-20 06:24:30,705 INFO L226 Difference]: Without dead ends: 972 [2021-11-20 06:24:30,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 669 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 06:24:30,712 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 37 mSDsluCounter, 17761 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18544 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:30,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 18544 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-20 06:24:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-20 06:24:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 928. [2021-11-20 06:24:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 625 states have (on average 1.2016) internal successors, (751), 630 states have internal predecessors, (751), 230 states have call successors, (230), 52 states have call predecessors, (230), 71 states have return successors, (526), 245 states have call predecessors, (526), 228 states have call successors, (526) [2021-11-20 06:24:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1507 transitions. [2021-11-20 06:24:30,823 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1507 transitions. Word has length 350 [2021-11-20 06:24:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:30,824 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1507 transitions. [2021-11-20 06:24:30,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 6.846153846153846) internal successors, (178), 21 states have internal predecessors, (178), 8 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 12 states have call predecessors, (52), 7 states have call successors, (52) [2021-11-20 06:24:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1507 transitions. [2021-11-20 06:24:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-20 06:24:30,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:30,832 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:30,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-20 06:24:31,047 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1971847942, now seen corresponding path program 2 times [2021-11-20 06:24:31,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:31,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317280133] [2021-11-20 06:24:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:31,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:31,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:24:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391661361] [2021-11-20 06:24:31,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:24:31,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:31,101 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:31,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab0bc65-f926-4433-9c06-109f51086e91/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-20 06:24:32,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:24:32,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:24:32,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 152 conjunts are in the unsatisfiable core [2021-11-20 06:24:32,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:39,096 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 06:24:41,220 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))))) is different from true [2021-11-20 06:24:41,629 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:24:41,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 58 [2021-11-20 06:24:41,793 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-20 06:24:41,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-11-20 06:26:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:26:26,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:26:26,424 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-20 06:26:26,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 1 [2021-11-20 06:26:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 489 proven. 11 refuted. 0 times theorem prover too weak. 207 trivial. 16 not checked. [2021-11-20 06:26:26,951 INFO L328 TraceCheckSpWp]: Computing backward predicates...