./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8 --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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:33:03,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:03,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:03,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:03,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:03,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:03,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:03,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:03,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:03,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:03,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:03,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:03,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:03,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:03,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:03,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:03,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:03,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:03,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:03,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:03,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:03,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:03,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:03,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:03,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:03,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:03,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:03,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:03,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:03,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:03,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:03,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:03,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:03,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:03,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:03,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:03,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:03,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:03,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:03,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:03,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:03,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:33:03,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:03,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:03,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:03,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:03,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:03,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:03,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:03,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:03,194 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:03,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:03,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:03,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:03,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:33:03,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:03,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:33:03,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:33:03,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:03,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:33:03,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:03,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:03,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:03,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:03,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:03,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:03,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:33:03,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:33:03,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:33:03,199 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:33:03,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:33:03,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:33:03,199 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_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2022-11-16 11:33:03,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:03,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:03,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:03,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:03,505 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:03,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2022-11-16 11:33:03,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/data/b99089d4a/e20dd820fd2541d181ad1de6bac6ab1e/FLAG863a8f52a [2022-11-16 11:33:04,452 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:04,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2022-11-16 11:33:04,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/data/b99089d4a/e20dd820fd2541d181ad1de6bac6ab1e/FLAG863a8f52a [2022-11-16 11:33:04,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/data/b99089d4a/e20dd820fd2541d181ad1de6bac6ab1e [2022-11-16 11:33:04,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:04,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:04,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:04,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:04,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:04,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:04" (1/1) ... [2022-11-16 11:33:04,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd10d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:04, skipping insertion in model container [2022-11-16 11:33:04,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:04" (1/1) ... [2022-11-16 11:33:04,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:05,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:05,393 WARN L229 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_7387c40b-1c10-4e2a-ad09-decfea8c5780/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2022-11-16 11:33:05,401 WARN L229 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_7387c40b-1c10-4e2a-ad09-decfea8c5780/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2022-11-16 11:33:06,588 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,589 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,590 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,590 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,592 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,609 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,610 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,613 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,613 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,633 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,634 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,634 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:06,635 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:33:07,049 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:33:07,050 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:33:07,051 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:33:07,053 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:33:07,054 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:33:07,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:33:07,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:33:07,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:33:07,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:33:07,257 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:33:07,289 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,297 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,302 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,311 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,389 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,390 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,391 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,391 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,391 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,392 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,392 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,393 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,394 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,394 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,394 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,395 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,395 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,398 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,398 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,399 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,399 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,402 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,403 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,410 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,411 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,411 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:07,450 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:33:07,463 WARN L229 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_7387c40b-1c10-4e2a-ad09-decfea8c5780/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2022-11-16 11:33:07,464 WARN L229 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_7387c40b-1c10-4e2a-ad09-decfea8c5780/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2022-11-16 11:33:07,502 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,502 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,503 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,503 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,505 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,514 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,514 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,515 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,516 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,517 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,518 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,518 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,519 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:33:07,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:33:07,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:33:07,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:33:07,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:33:07,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:33:07,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:33:07,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:33:07,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:33:07,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:33:07,640 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:33:07,716 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,727 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,728 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,747 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,805 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,805 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,806 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,807 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,808 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,808 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,809 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,809 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,836 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,837 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,837 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,837 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,837 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,838 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,839 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,839 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,839 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,841 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,842 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,847 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,848 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,848 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:33:07,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:08,083 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:33:08,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08 WrapperNode [2022-11-16 11:33:08,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:08,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:08,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:33:08,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:33:08,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,305 INFO L138 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 815 [2022-11-16 11:33:08,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:08,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:33:08,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:33:08,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:33:08,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:33:08,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:33:08,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:33:08,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:33:08,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (1/1) ... [2022-11-16 11:33:08,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:08,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:33:08,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:33:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-16 11:33:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-16 11:33:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 11:33:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 11:33:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:33:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 11:33:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 11:33:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 11:33:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 11:33:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:33:08,540 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:33:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-16 11:33:08,541 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-16 11:33:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:33:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 11:33:08,542 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 11:33:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:33:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:33:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:33:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:33:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:33:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-16 11:33:08,547 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-16 11:33:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 11:33:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 11:33:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:33:08,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:33:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:33:08,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:33:08,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 11:33:08,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 11:33:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 11:33:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 11:33:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 11:33:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 11:33:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 11:33:08,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 11:33:08,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:33:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:33:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 11:33:08,556 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 11:33:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:33:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:33:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:33:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-16 11:33:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-16 11:33:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:33:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:33:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 11:33:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 11:33:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:33:08,557 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:33:08,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:33:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 11:33:08,558 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 11:33:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 11:33:08,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 11:33:08,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:33:08,972 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:33:08,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:33:10,184 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:33:10,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:33:10,194 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:33:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:10 BoogieIcfgContainer [2022-11-16 11:33:10,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:33:10,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:33:10,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:33:10,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:33:10,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:33:04" (1/3) ... [2022-11-16 11:33:10,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb67652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:10, skipping insertion in model container [2022-11-16 11:33:10,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:08" (2/3) ... [2022-11-16 11:33:10,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb67652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:10, skipping insertion in model container [2022-11-16 11:33:10,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:10" (3/3) ... [2022-11-16 11:33:10,211 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2022-11-16 11:33:10,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:33:10,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:33:10,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:10,341 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@632654a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:10,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:33:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 186 states have (on average 1.2473118279569892) internal successors, (232), 189 states have internal predecessors, (232), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:33:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:33:10,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:10,371 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2022-11-16 11:33:10,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:10,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2041456633, now seen corresponding path program 1 times [2022-11-16 11:33:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:10,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889751950] [2022-11-16 11:33:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:33:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:33:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:33:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:33:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:33:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:33:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:33:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:33:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:33:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-16 11:33:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:11,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889751950] [2022-11-16 11:33:11,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889751950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:11,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:11,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:33:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211404012] [2022-11-16 11:33:11,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:11,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:11,516 INFO L87 Difference]: Start difference. First operand has 307 states, 186 states have (on average 1.2473118279569892) internal successors, (232), 189 states have internal predecessors, (232), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:33:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:13,058 INFO L93 Difference]: Finished difference Result 695 states and 1100 transitions. [2022-11-16 11:33:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:13,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2022-11-16 11:33:13,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:13,093 INFO L225 Difference]: With dead ends: 695 [2022-11-16 11:33:13,093 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 11:33:13,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:13,112 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 124 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:13,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 552 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:33:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 11:33:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 300. [2022-11-16 11:33:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 181 states have (on average 1.2099447513812154) internal successors, (219), 183 states have internal predecessors, (219), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-16 11:33:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 407 transitions. [2022-11-16 11:33:13,244 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 407 transitions. Word has length 102 [2022-11-16 11:33:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:13,244 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 407 transitions. [2022-11-16 11:33:13,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:33:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 407 transitions. [2022-11-16 11:33:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:33:13,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:13,255 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2022-11-16 11:33:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:33:13,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1554967455, now seen corresponding path program 1 times [2022-11-16 11:33:13,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:13,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263342832] [2022-11-16 11:33:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:13,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:33:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:33:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:33:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:33:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:33:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:33:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:33:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:33:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:33:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 11:33:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:14,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263342832] [2022-11-16 11:33:14,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263342832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:14,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787156851] [2022-11-16 11:33:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:14,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:14,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:14,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:33:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:33:14,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 11:33:14,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:14,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787156851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:14,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:33:14,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 11:33:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232659612] [2022-11-16 11:33:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:14,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:33:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:33:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:14,834 INFO L87 Difference]: Start difference. First operand 300 states and 407 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:33:15,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:15,097 INFO L93 Difference]: Finished difference Result 566 states and 774 transitions. [2022-11-16 11:33:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:15,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2022-11-16 11:33:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:15,101 INFO L225 Difference]: With dead ends: 566 [2022-11-16 11:33:15,101 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 11:33:15,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:33:15,103 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 430 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:15,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1420 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 11:33:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-16 11:33:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 185 states have internal predecessors, (220), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2022-11-16 11:33:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 412 transitions. [2022-11-16 11:33:15,133 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 412 transitions. Word has length 102 [2022-11-16 11:33:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:15,134 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 412 transitions. [2022-11-16 11:33:15,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 11:33:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 412 transitions. [2022-11-16 11:33:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 11:33:15,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:15,136 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-16 11:33:15,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:15,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:15,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash 607806195, now seen corresponding path program 1 times [2022-11-16 11:33:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162787408] [2022-11-16 11:33:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:15,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:33:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:33:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:33:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:33:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:33:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:33:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:33:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:33:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:33:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:33:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:33:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:33:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:33:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 11:33:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-16 11:33:16,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:16,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162787408] [2022-11-16 11:33:16,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162787408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:33:16,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142714452] [2022-11-16 11:33:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:16,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:16,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:16,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:33:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:16,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 11:33:17,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:17,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142714452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:17,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:33:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-16 11:33:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239842060] [2022-11-16 11:33:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:17,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:33:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:33:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:33:17,164 INFO L87 Difference]: Start difference. First operand 302 states and 412 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:33:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:17,628 INFO L93 Difference]: Finished difference Result 589 states and 821 transitions. [2022-11-16 11:33:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 110 [2022-11-16 11:33:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:17,635 INFO L225 Difference]: With dead ends: 589 [2022-11-16 11:33:17,635 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 11:33:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:33:17,640 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 460 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:17,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 2112 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 11:33:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 321. [2022-11-16 11:33:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 198 states have (on average 1.2222222222222223) internal successors, (242), 201 states have internal predecessors, (242), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2022-11-16 11:33:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 449 transitions. [2022-11-16 11:33:17,679 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 449 transitions. Word has length 110 [2022-11-16 11:33:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:17,680 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 449 transitions. [2022-11-16 11:33:17,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-16 11:33:17,680 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 449 transitions. [2022-11-16 11:33:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 11:33:17,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:17,684 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-16 11:33:17,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:17,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:17,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash 448579649, now seen corresponding path program 1 times [2022-11-16 11:33:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:17,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454902830] [2022-11-16 11:33:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:17,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:17,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122304121] [2022-11-16 11:33:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:17,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:17,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:17,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:18,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:33:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:18,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 11:33:18,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:18,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:18,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454902830] [2022-11-16 11:33:18,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122304121] [2022-11-16 11:33:18,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122304121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:18,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:18,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:33:18,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310758374] [2022-11-16 11:33:18,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:18,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:33:18,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:33:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:18,681 INFO L87 Difference]: Start difference. First operand 321 states and 449 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 11:33:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:19,016 INFO L93 Difference]: Finished difference Result 614 states and 870 transitions. [2022-11-16 11:33:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 125 [2022-11-16 11:33:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:19,020 INFO L225 Difference]: With dead ends: 614 [2022-11-16 11:33:19,020 INFO L226 Difference]: Without dead ends: 329 [2022-11-16 11:33:19,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:33:19,022 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 454 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:19,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1735 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-16 11:33:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 321. [2022-11-16 11:33:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 198 states have (on average 1.2222222222222223) internal successors, (242), 201 states have internal predecessors, (242), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2022-11-16 11:33:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 449 transitions. [2022-11-16 11:33:19,053 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 449 transitions. Word has length 125 [2022-11-16 11:33:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:19,055 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 449 transitions. [2022-11-16 11:33:19,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 11:33:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 449 transitions. [2022-11-16 11:33:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 11:33:19,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:19,060 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2022-11-16 11:33:19,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:19,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:19,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1936356608, now seen corresponding path program 1 times [2022-11-16 11:33:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:19,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15472453] [2022-11-16 11:33:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:19,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:19,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84387475] [2022-11-16 11:33:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:19,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:19,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:19,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:33:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:19,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:33:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-16 11:33:20,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:20,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15472453] [2022-11-16 11:33:20,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:20,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84387475] [2022-11-16 11:33:20,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84387475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:20,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:20,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:33:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930530383] [2022-11-16 11:33:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:33:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:33:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:33:20,074 INFO L87 Difference]: Start difference. First operand 321 states and 449 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 11:33:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:20,758 INFO L93 Difference]: Finished difference Result 624 states and 883 transitions. [2022-11-16 11:33:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:33:20,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2022-11-16 11:33:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:20,764 INFO L225 Difference]: With dead ends: 624 [2022-11-16 11:33:20,764 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 11:33:20,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:33:20,767 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 525 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:20,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 2324 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:33:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 11:33:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 321. [2022-11-16 11:33:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 198 states have (on average 1.2222222222222223) internal successors, (242), 201 states have internal predecessors, (242), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2022-11-16 11:33:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 449 transitions. [2022-11-16 11:33:20,794 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 449 transitions. Word has length 141 [2022-11-16 11:33:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 449 transitions. [2022-11-16 11:33:20,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-16 11:33:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 449 transitions. [2022-11-16 11:33:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:33:20,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:20,797 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:20,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:21,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:21,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 962773780, now seen corresponding path program 1 times [2022-11-16 11:33:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:21,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209068711] [2022-11-16 11:33:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:21,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:21,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:21,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078036138] [2022-11-16 11:33:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:21,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:33:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:21,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:21,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-16 11:33:21,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:21,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209068711] [2022-11-16 11:33:21,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:21,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078036138] [2022-11-16 11:33:21,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078036138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:21,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:21,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:33:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970654084] [2022-11-16 11:33:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:33:21,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:33:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:33:21,807 INFO L87 Difference]: Start difference. First operand 321 states and 449 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 11:33:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:22,184 INFO L93 Difference]: Finished difference Result 579 states and 819 transitions. [2022-11-16 11:33:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:22,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 156 [2022-11-16 11:33:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:22,188 INFO L225 Difference]: With dead ends: 579 [2022-11-16 11:33:22,188 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 11:33:22,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:33:22,191 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 451 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:22,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2045 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 11:33:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-16 11:33:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 199 states have (on average 1.221105527638191) internal successors, (243), 203 states have internal predecessors, (243), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2022-11-16 11:33:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 452 transitions. [2022-11-16 11:33:22,219 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 452 transitions. Word has length 156 [2022-11-16 11:33:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:22,220 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 452 transitions. [2022-11-16 11:33:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 11:33:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 452 transitions. [2022-11-16 11:33:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-16 11:33:22,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:22,224 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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, 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] [2022-11-16 11:33:22,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:22,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:33:22,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -19960136, now seen corresponding path program 1 times [2022-11-16 11:33:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544433873] [2022-11-16 11:33:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:22,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:22,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053665440] [2022-11-16 11:33:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:22,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:22,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:22,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:33:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:33:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 11:33:23,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:23,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544433873] [2022-11-16 11:33:23,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:23,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053665440] [2022-11-16 11:33:23,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053665440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:23,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:23,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:33:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434921454] [2022-11-16 11:33:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:23,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:23,313 INFO L87 Difference]: Start difference. First operand 323 states and 452 transitions. Second operand has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-16 11:33:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:23,939 INFO L93 Difference]: Finished difference Result 597 states and 845 transitions. [2022-11-16 11:33:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:33:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 172 [2022-11-16 11:33:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:23,943 INFO L225 Difference]: With dead ends: 597 [2022-11-16 11:33:23,943 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 11:33:23,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:33:23,945 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 515 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:23,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2603 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:33:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 11:33:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2022-11-16 11:33:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 212 states have (on average 1.2311320754716981) internal successors, (261), 215 states have internal predecessors, (261), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2022-11-16 11:33:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 472 transitions. [2022-11-16 11:33:23,968 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 472 transitions. Word has length 172 [2022-11-16 11:33:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:23,969 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 472 transitions. [2022-11-16 11:33:23,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-16 11:33:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 472 transitions. [2022-11-16 11:33:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 11:33:23,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:23,973 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:33:23,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:24,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1282000388, now seen corresponding path program 1 times [2022-11-16 11:33:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:24,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686498559] [2022-11-16 11:33:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:24,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:24,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188220162] [2022-11-16 11:33:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:24,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:24,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:33:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:25,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:33:25,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-16 11:33:25,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:25,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686498559] [2022-11-16 11:33:25,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188220162] [2022-11-16 11:33:25,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188220162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:25,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:25,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:33:25,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586228752] [2022-11-16 11:33:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:25,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:33:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:33:25,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:33:25,190 INFO L87 Difference]: Start difference. First operand 337 states and 472 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 11:33:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:25,651 INFO L93 Difference]: Finished difference Result 617 states and 873 transitions. [2022-11-16 11:33:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:33:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 202 [2022-11-16 11:33:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:25,654 INFO L225 Difference]: With dead ends: 617 [2022-11-16 11:33:25,655 INFO L226 Difference]: Without dead ends: 345 [2022-11-16 11:33:25,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:33:25,657 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 475 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:25,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 2331 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-16 11:33:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2022-11-16 11:33:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 212 states have (on average 1.2311320754716981) internal successors, (261), 215 states have internal predecessors, (261), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2022-11-16 11:33:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 472 transitions. [2022-11-16 11:33:25,680 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 472 transitions. Word has length 202 [2022-11-16 11:33:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:25,681 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 472 transitions. [2022-11-16 11:33:25,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 11:33:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 472 transitions. [2022-11-16 11:33:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 11:33:25,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:25,685 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:25,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:33:25,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2080874788, now seen corresponding path program 1 times [2022-11-16 11:33:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:25,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259211208] [2022-11-16 11:33:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:25,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:25,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:25,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997854411] [2022-11-16 11:33:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:25,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:25,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:25,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:33:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 3115 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:33:26,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 11:33:26,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259211208] [2022-11-16 11:33:26,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997854411] [2022-11-16 11:33:26,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997854411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:26,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:26,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:33:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522715268] [2022-11-16 11:33:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:26,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:33:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:33:26,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:26,877 INFO L87 Difference]: Start difference. First operand 337 states and 472 transitions. Second operand has 11 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 11:33:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:27,593 INFO L93 Difference]: Finished difference Result 611 states and 863 transitions. [2022-11-16 11:33:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:33:27,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 234 [2022-11-16 11:33:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:27,597 INFO L225 Difference]: With dead ends: 611 [2022-11-16 11:33:27,597 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 11:33:27,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:33:27,599 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 546 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:27,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 2860 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:33:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 11:33:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 321. [2022-11-16 11:33:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 198 states have (on average 1.2222222222222223) internal successors, (242), 201 states have internal predecessors, (242), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-16 11:33:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 447 transitions. [2022-11-16 11:33:27,620 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 447 transitions. Word has length 234 [2022-11-16 11:33:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:27,620 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 447 transitions. [2022-11-16 11:33:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 11:33:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 447 transitions. [2022-11-16 11:33:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 11:33:27,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:27,624 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:27,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:27,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -880991622, now seen corresponding path program 1 times [2022-11-16 11:33:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:27,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984316504] [2022-11-16 11:33:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:27,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229136997] [2022-11-16 11:33:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:27,930 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:33:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:28,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:33:28,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:33:28,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:28,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984316504] [2022-11-16 11:33:28,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229136997] [2022-11-16 11:33:28,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229136997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:28,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:28,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:33:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214876875] [2022-11-16 11:33:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:28,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:33:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:33:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:28,958 INFO L87 Difference]: Start difference. First operand 321 states and 447 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:29,356 INFO L93 Difference]: Finished difference Result 642 states and 911 transitions. [2022-11-16 11:33:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 264 [2022-11-16 11:33:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:29,359 INFO L225 Difference]: With dead ends: 642 [2022-11-16 11:33:29,359 INFO L226 Difference]: Without dead ends: 357 [2022-11-16 11:33:29,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:33:29,362 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 23 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:29,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1880 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-16 11:33:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 329. [2022-11-16 11:33:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.2233009708737863) internal successors, (252), 209 states have internal predecessors, (252), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-16 11:33:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 457 transitions. [2022-11-16 11:33:29,389 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 457 transitions. Word has length 264 [2022-11-16 11:33:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:29,390 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 457 transitions. [2022-11-16 11:33:29,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 457 transitions. [2022-11-16 11:33:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 11:33:29,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:29,395 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:29,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:29,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:29,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1076067072, now seen corresponding path program 1 times [2022-11-16 11:33:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:29,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123151354] [2022-11-16 11:33:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:29,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:29,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915178000] [2022-11-16 11:33:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:29,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:29,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:29,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:33:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:30,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-16 11:33:30,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:30,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123151354] [2022-11-16 11:33:30,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915178000] [2022-11-16 11:33:30,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915178000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:30,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:30,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:33:30,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200569674] [2022-11-16 11:33:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:30,562 INFO L87 Difference]: Start difference. First operand 329 states and 457 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:30,632 INFO L93 Difference]: Finished difference Result 630 states and 887 transitions. [2022-11-16 11:33:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:30,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 264 [2022-11-16 11:33:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:30,636 INFO L225 Difference]: With dead ends: 630 [2022-11-16 11:33:30,636 INFO L226 Difference]: Without dead ends: 337 [2022-11-16 11:33:30,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:30,639 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 3 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1207 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 [2022-11-16 11:33:30,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1207 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-16 11:33:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2022-11-16 11:33:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 210 states have (on average 1.2190476190476192) internal successors, (256), 213 states have internal predecessors, (256), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-16 11:33:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 461 transitions. [2022-11-16 11:33:30,666 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 461 transitions. Word has length 264 [2022-11-16 11:33:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:30,666 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 461 transitions. [2022-11-16 11:33:30,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 461 transitions. [2022-11-16 11:33:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 11:33:30,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:30,671 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:30,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:30,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:30,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -848151290, now seen corresponding path program 1 times [2022-11-16 11:33:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:30,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278509784] [2022-11-16 11:33:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:31,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:31,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537638876] [2022-11-16 11:33:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:31,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:31,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:33:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 3373 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-16 11:33:31,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-16 11:33:32,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:32,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278509784] [2022-11-16 11:33:32,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:32,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537638876] [2022-11-16 11:33:32,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537638876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:32,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:32,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:33:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286739917] [2022-11-16 11:33:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:33:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:33:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:33:32,665 INFO L87 Difference]: Start difference. First operand 333 states and 461 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 11:33:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:33,571 INFO L93 Difference]: Finished difference Result 669 states and 939 transitions. [2022-11-16 11:33:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:33:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 264 [2022-11-16 11:33:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:33,574 INFO L225 Difference]: With dead ends: 669 [2022-11-16 11:33:33,574 INFO L226 Difference]: Without dead ends: 398 [2022-11-16 11:33:33,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 249 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:33:33,577 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 128 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:33,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2918 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 399 Invalid, 0 Unknown, 67 Unchecked, 0.6s Time] [2022-11-16 11:33:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-16 11:33:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 354. [2022-11-16 11:33:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 227 states have (on average 1.2158590308370043) internal successors, (276), 230 states have internal predecessors, (276), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2022-11-16 11:33:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 491 transitions. [2022-11-16 11:33:33,604 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 491 transitions. Word has length 264 [2022-11-16 11:33:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:33,605 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 491 transitions. [2022-11-16 11:33:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 11:33:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 491 transitions. [2022-11-16 11:33:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 11:33:33,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:33,610 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:33,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:33,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:33,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -456492156, now seen corresponding path program 1 times [2022-11-16 11:33:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731772225] [2022-11-16 11:33:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:33,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:33,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144248618] [2022-11-16 11:33:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:33,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:33,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:33:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:34,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:33:34,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-16 11:33:34,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731772225] [2022-11-16 11:33:34,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144248618] [2022-11-16 11:33:34,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144248618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:34,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:34,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:33:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67104718] [2022-11-16 11:33:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:34,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:34,848 INFO L87 Difference]: Start difference. First operand 354 states and 491 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:34,910 INFO L93 Difference]: Finished difference Result 683 states and 965 transitions. [2022-11-16 11:33:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 264 [2022-11-16 11:33:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:34,914 INFO L225 Difference]: With dead ends: 683 [2022-11-16 11:33:34,914 INFO L226 Difference]: Without dead ends: 374 [2022-11-16 11:33:34,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:34,918 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:34,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1662 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-16 11:33:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 362. [2022-11-16 11:33:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 235 states have (on average 1.2127659574468086) internal successors, (285), 238 states have internal predecessors, (285), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2022-11-16 11:33:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 500 transitions. [2022-11-16 11:33:34,949 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 500 transitions. Word has length 264 [2022-11-16 11:33:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:34,950 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 500 transitions. [2022-11-16 11:33:34,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 500 transitions. [2022-11-16 11:33:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-16 11:33:34,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:34,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:34,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:35,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:33:35,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash 890915541, now seen corresponding path program 1 times [2022-11-16 11:33:35,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:35,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297471829] [2022-11-16 11:33:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:35,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:35,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:35,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325092508] [2022-11-16 11:33:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:35,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:35,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:35,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:33:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:36,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3375 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 11:33:36,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:36,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:33:36,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:33:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-16 11:33:36,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297471829] [2022-11-16 11:33:36,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325092508] [2022-11-16 11:33:36,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325092508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:36,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:36,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:33:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386973491] [2022-11-16 11:33:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:36,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:33:36,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:36,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:33:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:33:36,747 INFO L87 Difference]: Start difference. First operand 362 states and 500 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-11-16 11:33:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:37,805 INFO L93 Difference]: Finished difference Result 767 states and 1073 transitions. [2022-11-16 11:33:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:33:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 266 [2022-11-16 11:33:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:37,809 INFO L225 Difference]: With dead ends: 767 [2022-11-16 11:33:37,809 INFO L226 Difference]: Without dead ends: 446 [2022-11-16 11:33:37,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:33:37,812 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 106 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:37,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 3906 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 768 Invalid, 0 Unknown, 91 Unchecked, 0.8s Time] [2022-11-16 11:33:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-16 11:33:37,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 410. [2022-11-16 11:33:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 276 states have (on average 1.213768115942029) internal successors, (335), 280 states have internal predecessors, (335), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2022-11-16 11:33:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 578 transitions. [2022-11-16 11:33:37,843 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 578 transitions. Word has length 266 [2022-11-16 11:33:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:37,843 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 578 transitions. [2022-11-16 11:33:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-11-16 11:33:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 578 transitions. [2022-11-16 11:33:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-16 11:33:37,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:37,846 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:37,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:38,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:33:38,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1668289777, now seen corresponding path program 1 times [2022-11-16 11:33:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290765113] [2022-11-16 11:33:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:38,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464046882] [2022-11-16 11:33:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:38,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:38,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:38,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:33:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:39,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:39,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 11:33:39,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:39,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290765113] [2022-11-16 11:33:39,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:39,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464046882] [2022-11-16 11:33:39,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464046882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:39,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:39,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:33:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565122550] [2022-11-16 11:33:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:39,062 INFO L87 Difference]: Start difference. First operand 410 states and 578 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:39,119 INFO L93 Difference]: Finished difference Result 787 states and 1154 transitions. [2022-11-16 11:33:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:39,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2022-11-16 11:33:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:39,123 INFO L225 Difference]: With dead ends: 787 [2022-11-16 11:33:39,124 INFO L226 Difference]: Without dead ends: 413 [2022-11-16 11:33:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:39,132 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 7 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:39,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1213 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:39,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-16 11:33:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2022-11-16 11:33:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 276 states have (on average 1.210144927536232) internal successors, (334), 280 states have internal predecessors, (334), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2022-11-16 11:33:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 577 transitions. [2022-11-16 11:33:39,164 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 577 transitions. Word has length 266 [2022-11-16 11:33:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:39,164 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 577 transitions. [2022-11-16 11:33:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 577 transitions. [2022-11-16 11:33:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-16 11:33:39,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:39,168 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:39,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:39,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:33:39,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 615649449, now seen corresponding path program 1 times [2022-11-16 11:33:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:39,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186731984] [2022-11-16 11:33:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:39,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91276558] [2022-11-16 11:33:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:39,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:39,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:39,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:33:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:40,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 3405 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:33:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-16 11:33:40,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186731984] [2022-11-16 11:33:40,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:40,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91276558] [2022-11-16 11:33:40,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91276558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:40,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:40,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:33:40,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747239082] [2022-11-16 11:33:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:40,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:40,445 INFO L87 Difference]: Start difference. First operand 410 states and 577 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:40,769 INFO L93 Difference]: Finished difference Result 791 states and 1166 transitions. [2022-11-16 11:33:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 272 [2022-11-16 11:33:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:40,774 INFO L225 Difference]: With dead ends: 791 [2022-11-16 11:33:40,774 INFO L226 Difference]: Without dead ends: 417 [2022-11-16 11:33:40,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:40,779 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 15 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:40,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1548 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-16 11:33:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 411. [2022-11-16 11:33:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 277 states have (on average 1.2093862815884477) internal successors, (335), 281 states have internal predecessors, (335), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2022-11-16 11:33:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 578 transitions. [2022-11-16 11:33:40,816 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 578 transitions. Word has length 272 [2022-11-16 11:33:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:40,816 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 578 transitions. [2022-11-16 11:33:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:33:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 578 transitions. [2022-11-16 11:33:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-16 11:33:40,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:40,820 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:40,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:33:41,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash 800475555, now seen corresponding path program 1 times [2022-11-16 11:33:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:41,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224291294] [2022-11-16 11:33:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:41,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:41,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920038035] [2022-11-16 11:33:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:41,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:41,131 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:33:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:42,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3390 conjuncts, 174 conjunts are in the unsatisfiable core [2022-11-16 11:33:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:42,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:33:42,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:33:42,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:33:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 11:33:43,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-16 11:33:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:43,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:33:43,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:43,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:43,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:33:43,761 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2697 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2697) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2698 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2698) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:33:48,559 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_2700 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2700))) (exists ((v_ArrVal_2699 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2699))))) is different from true [2022-11-16 11:33:49,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 11:33:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 233 proven. 20 refuted. 0 times theorem prover too weak. 194 trivial. 3 not checked. [2022-11-16 11:33:50,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:51,932 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:33:51,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-16 11:33:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 9 proven. 68 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-11-16 11:33:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224291294] [2022-11-16 11:33:52,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920038035] [2022-11-16 11:33:52,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920038035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:52,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:52,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2022-11-16 11:33:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911753200] [2022-11-16 11:33:52,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-16 11:33:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-16 11:33:52,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2536, Unknown=27, NotChecked=206, Total=2970 [2022-11-16 11:33:52,878 INFO L87 Difference]: Start difference. First operand 411 states and 578 transitions. Second operand has 55 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 46 states have internal predecessors, (183), 18 states have call successors, (48), 8 states have call predecessors, (48), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) [2022-11-16 11:34:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:02,020 INFO L93 Difference]: Finished difference Result 1031 states and 1608 transitions. [2022-11-16 11:34:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 11:34:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 46 states have internal predecessors, (183), 18 states have call successors, (48), 8 states have call predecessors, (48), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) Word has length 272 [2022-11-16 11:34:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:02,027 INFO L225 Difference]: With dead ends: 1031 [2022-11-16 11:34:02,028 INFO L226 Difference]: Without dead ends: 656 [2022-11-16 11:34:02,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 490 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=380, Invalid=5415, Unknown=65, NotChecked=302, Total=6162 [2022-11-16 11:34:02,034 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 280 mSDsluCounter, 6693 mSDsCounter, 0 mSdLazyCounter, 7018 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 7055 SdHoareTripleChecker+Invalid, 12642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 7018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5443 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:02,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 7055 Invalid, 12642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [181 Valid, 7018 Invalid, 0 Unknown, 5443 Unchecked, 6.7s Time] [2022-11-16 11:34:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-16 11:34:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 432. [2022-11-16 11:34:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 290 states have (on average 1.1896551724137931) internal successors, (345), 295 states have internal predecessors, (345), 104 states have call successors, (104), 28 states have call predecessors, (104), 36 states have return successors, (170), 108 states have call predecessors, (170), 102 states have call successors, (170) [2022-11-16 11:34:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 619 transitions. [2022-11-16 11:34:02,091 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 619 transitions. Word has length 272 [2022-11-16 11:34:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:02,091 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 619 transitions. [2022-11-16 11:34:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 46 states have internal predecessors, (183), 18 states have call successors, (48), 8 states have call predecessors, (48), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) [2022-11-16 11:34:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 619 transitions. [2022-11-16 11:34:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-16 11:34:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:02,096 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:02,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:02,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:02,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1658089085, now seen corresponding path program 1 times [2022-11-16 11:34:02,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:02,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181957334] [2022-11-16 11:34:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:02,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:34:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528081815] [2022-11-16 11:34:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:02,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:02,431 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:34:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:03,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 3395 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 11:34:03,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:03,635 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_2999 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2999) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3000 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3000))))) is different from true [2022-11-16 11:34:03,659 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2999 (Array Int Int)) (v_ArrVal_3000 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3000)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2999) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 11:34:03,861 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_3002 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3002))) (exists ((v_ArrVal_3001 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3001))))) is different from true [2022-11-16 11:34:04,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 11:34:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 10 not checked. [2022-11-16 11:34:04,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:05,830 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:34:05,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-16 11:34:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 41 proven. 32 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-16 11:34:06,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181957334] [2022-11-16 11:34:06,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:34:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528081815] [2022-11-16 11:34:06,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528081815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:06,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:06,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2022-11-16 11:34:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533746232] [2022-11-16 11:34:06,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:34:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:34:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=721, Unknown=10, NotChecked=168, Total=992 [2022-11-16 11:34:06,241 INFO L87 Difference]: Start difference. First operand 432 states and 619 transitions. Second operand has 32 states, 31 states have (on average 5.290322580645161) internal successors, (164), 28 states have internal predecessors, (164), 10 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2022-11-16 11:34:06,767 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_2999 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2999) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3000 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3000))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_3002 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3002))) (exists ((v_ArrVal_3001 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3001)))))) is different from true [2022-11-16 11:34:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:10,709 INFO L93 Difference]: Finished difference Result 952 states and 1459 transitions. [2022-11-16 11:34:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:34:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.290322580645161) internal successors, (164), 28 states have internal predecessors, (164), 10 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) Word has length 274 [2022-11-16 11:34:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:10,715 INFO L225 Difference]: With dead ends: 952 [2022-11-16 11:34:10,715 INFO L226 Difference]: Without dead ends: 598 [2022-11-16 11:34:10,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 521 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=1605, Unknown=20, NotChecked=340, Total=2162 [2022-11-16 11:34:10,719 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 225 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 8251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4278 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:10,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 4531 Invalid, 8251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3820 Invalid, 0 Unknown, 4278 Unchecked, 3.5s Time] [2022-11-16 11:34:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-16 11:34:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 427. [2022-11-16 11:34:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 285 states have (on average 1.1929824561403508) internal successors, (340), 289 states have internal predecessors, (340), 104 states have call successors, (104), 28 states have call predecessors, (104), 36 states have return successors, (166), 109 states have call predecessors, (166), 102 states have call successors, (166) [2022-11-16 11:34:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 610 transitions. [2022-11-16 11:34:10,761 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 610 transitions. Word has length 274 [2022-11-16 11:34:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:10,762 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 610 transitions. [2022-11-16 11:34:10,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.290322580645161) internal successors, (164), 28 states have internal predecessors, (164), 10 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2022-11-16 11:34:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 610 transitions. [2022-11-16 11:34:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-16 11:34:10,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:10,765 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:10,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:10,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:34:10,987 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:10,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1967381302, now seen corresponding path program 1 times [2022-11-16 11:34:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:10,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479583289] [2022-11-16 11:34:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:11,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:34:11,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280471672] [2022-11-16 11:34:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:11,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:11,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:11,077 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:11,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:34:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:12,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 3417 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:34:12,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 94 proven. 1 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-16 11:34:12,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-11-16 11:34:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:12,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479583289] [2022-11-16 11:34:12,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:34:12,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280471672] [2022-11-16 11:34:12,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280471672] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:12,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:12,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 20 [2022-11-16 11:34:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948440207] [2022-11-16 11:34:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:34:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:34:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:34:12,927 INFO L87 Difference]: Start difference. First operand 427 states and 610 transitions. Second operand has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (22), 5 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-16 11:34:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:13,202 INFO L93 Difference]: Finished difference Result 851 states and 1256 transitions. [2022-11-16 11:34:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:34:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (22), 5 states have call predecessors, (22), 1 states have call successors, (22) Word has length 296 [2022-11-16 11:34:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:13,207 INFO L225 Difference]: With dead ends: 851 [2022-11-16 11:34:13,208 INFO L226 Difference]: Without dead ends: 467 [2022-11-16 11:34:13,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 569 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:34:13,211 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 17 mSDsluCounter, 5436 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:13,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5860 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:34:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-16 11:34:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 441. [2022-11-16 11:34:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 298 states have (on average 1.1879194630872483) internal successors, (354), 300 states have internal predecessors, (354), 104 states have call successors, (104), 28 states have call predecessors, (104), 37 states have return successors, (178), 112 states have call predecessors, (178), 102 states have call successors, (178) [2022-11-16 11:34:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 636 transitions. [2022-11-16 11:34:13,256 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 636 transitions. Word has length 296 [2022-11-16 11:34:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:13,256 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 636 transitions. [2022-11-16 11:34:13,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 10 states have internal predecessors, (99), 2 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (22), 5 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-16 11:34:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 636 transitions. [2022-11-16 11:34:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-16 11:34:13,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:13,260 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:13,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:13,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2112360049, now seen corresponding path program 1 times [2022-11-16 11:34:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682995252] [2022-11-16 11:34:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:13,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:34:13,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480896615] [2022-11-16 11:34:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:13,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:13,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:13,606 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:13,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:34:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:14,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3405 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-16 11:34:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:14,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:34:15,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:34:15,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:34:15,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:34:15,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:34:15,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:34:15,816 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3462 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3462) |c_#memory_int|)) is different from true [2022-11-16 11:34:16,042 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3463 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| v_ArrVal_3463)) |c_#memory_int|)) is different from true [2022-11-16 11:34:16,053 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3463 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|) 0 v_ArrVal_3463)) |c_#memory_int|)) is different from true [2022-11-16 11:34:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:34:16,480 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 11:34:16,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 100 [2022-11-16 11:34:16,501 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:34:16,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:34:16,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:34:16,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:34:16,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:34:16,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 11:34:16,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 18 [2022-11-16 11:34:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 268 proven. 36 refuted. 0 times theorem prover too weak. 158 trivial. 12 not checked. [2022-11-16 11:34:17,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:20,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682995252] [2022-11-16 11:34:20,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:34:20,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480896615] [2022-11-16 11:34:20,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480896615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:20,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:20,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-16 11:34:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105907525] [2022-11-16 11:34:20,555 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:20,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:34:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:34:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1318, Unknown=31, NotChecked=228, Total=1722 [2022-11-16 11:34:20,558 INFO L87 Difference]: Start difference. First operand 441 states and 636 transitions. Second operand has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-16 11:34:21,474 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_3462 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3462) |c_#memory_int|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3463 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|) 0 v_ArrVal_3463)) |c_#memory_int|))) is different from true [2022-11-16 11:34:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:25,587 INFO L93 Difference]: Finished difference Result 1056 states and 1623 transitions. [2022-11-16 11:34:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:34:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) Word has length 278 [2022-11-16 11:34:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:25,594 INFO L225 Difference]: With dead ends: 1056 [2022-11-16 11:34:25,594 INFO L226 Difference]: Without dead ends: 672 [2022-11-16 11:34:25,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 390 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=242, Invalid=2276, Unknown=48, NotChecked=404, Total=2970 [2022-11-16 11:34:25,598 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 498 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 8513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4559 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:25,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 3484 Invalid, 8513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 3408 Invalid, 0 Unknown, 4559 Unchecked, 3.0s Time] [2022-11-16 11:34:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-16 11:34:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 484. [2022-11-16 11:34:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 330 states have (on average 1.1818181818181819) internal successors, (390), 336 states have internal predecessors, (390), 108 states have call successors, (108), 30 states have call predecessors, (108), 44 states have return successors, (208), 117 states have call predecessors, (208), 106 states have call successors, (208) [2022-11-16 11:34:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 706 transitions. [2022-11-16 11:34:25,662 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 706 transitions. Word has length 278 [2022-11-16 11:34:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:25,663 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 706 transitions. [2022-11-16 11:34:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 4.6) internal successors, (138), 31 states have internal predecessors, (138), 15 states have call successors, (28), 8 states have call predecessors, (28), 13 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-16 11:34:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 706 transitions. [2022-11-16 11:34:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-16 11:34:25,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:25,667 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:25,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:25,881 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 856711231, now seen corresponding path program 1 times [2022-11-16 11:34:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437955313] [2022-11-16 11:34:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:25,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:26,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437955313] [2022-11-16 11:34:26,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:34:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857403824] [2022-11-16 11:34:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:26,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:26,039 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:26,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:34:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:26,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:34:26,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-16 11:34:26,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:26,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857403824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:26,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:26,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032488147] [2022-11-16 11:34:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:26,974 INFO L87 Difference]: Start difference. First operand 484 states and 706 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:34:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:27,015 INFO L93 Difference]: Finished difference Result 941 states and 1378 transitions. [2022-11-16 11:34:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 274 [2022-11-16 11:34:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:27,020 INFO L225 Difference]: With dead ends: 941 [2022-11-16 11:34:27,020 INFO L226 Difference]: Without dead ends: 475 [2022-11-16 11:34:27,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:27,024 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 809 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 [2022-11-16 11:34:27,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 809 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-16 11:34:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-11-16 11:34:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 325 states have (on average 1.1815384615384616) internal successors, (384), 330 states have internal predecessors, (384), 106 states have call successors, (106), 29 states have call predecessors, (106), 42 states have return successors, (203), 115 states have call predecessors, (203), 104 states have call successors, (203) [2022-11-16 11:34:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 693 transitions. [2022-11-16 11:34:27,074 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 693 transitions. Word has length 274 [2022-11-16 11:34:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:27,074 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 693 transitions. [2022-11-16 11:34:27,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:34:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 693 transitions. [2022-11-16 11:34:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-16 11:34:27,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:27,078 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:27,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:27,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 11:34:27,289 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 700469053, now seen corresponding path program 1 times [2022-11-16 11:34:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:27,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828811882] [2022-11-16 11:34:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:27,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:34:27,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783763356] [2022-11-16 11:34:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:27,383 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:27,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:34:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:28,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 3395 conjuncts, 207 conjunts are in the unsatisfiable core [2022-11-16 11:34:28,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:28,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:34:30,007 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3924 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3924))) (exists ((v_ArrVal_3925 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3925) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3926 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3926)))) is different from true [2022-11-16 11:34:30,257 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:34:30,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 42 [2022-11-16 11:34:30,282 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:34:30,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 40 [2022-11-16 11:34:30,308 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:34:30,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 11:34:30,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-16 11:34:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 11:34:30,410 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 11:34:36,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:34:36,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 3069 treesize of output 3287 [2022-11-16 11:35:35,873 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3928 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3930 Int) (v_ArrVal_3927 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3928) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3930)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3927))))) is different from true [2022-11-16 11:36:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 256 proven. 133 refuted. 6 times theorem prover too weak. 52 trivial. 9 not checked. [2022-11-16 11:36:01,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:03,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:03,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828811882] [2022-11-16 11:36:03,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:36:03,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783763356] [2022-11-16 11:36:03,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783763356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:03,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:36:03,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-16 11:36:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103045786] [2022-11-16 11:36:03,002 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:03,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 11:36:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 11:36:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1958, Unknown=87, NotChecked=182, Total=2352 [2022-11-16 11:36:03,004 INFO L87 Difference]: Start difference. First operand 475 states and 693 transitions. Second operand has 45 states, 40 states have (on average 4.3) internal successors, (172), 38 states have internal predecessors, (172), 16 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 15 states have call predecessors, (30), 16 states have call successors, (30) [2022-11-16 11:36:16,087 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3924 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3924))) (exists ((v_ArrVal_3925 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3925) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3926 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3926))) (exists ((v_ArrVal_3928 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3930 Int) (v_ArrVal_3927 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3928) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3930)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3927))))) (exists ((v_ArrVal_3922 Int) (|v___CPROVER_overflow_mult_~#c~1.base_458| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_458|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_458| v_ArrVal_3922))))) is different from true [2022-11-16 11:36:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:48,865 INFO L93 Difference]: Finished difference Result 1147 states and 1779 transitions. [2022-11-16 11:36:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:36:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 4.3) internal successors, (172), 38 states have internal predecessors, (172), 16 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 15 states have call predecessors, (30), 16 states have call successors, (30) Word has length 274 [2022-11-16 11:36:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:48,874 INFO L225 Difference]: With dead ends: 1147 [2022-11-16 11:36:48,874 INFO L226 Difference]: Without dead ends: 773 [2022-11-16 11:36:48,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 305 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 131.6s TimeCoverageRelationStatistics Valid=252, Invalid=3933, Unknown=117, NotChecked=390, Total=4692 [2022-11-16 11:36:48,878 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 334 mSDsluCounter, 4906 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 12445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8806 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:48,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 5303 Invalid, 12445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 3304 Invalid, 0 Unknown, 8806 Unchecked, 3.1s Time] [2022-11-16 11:36:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-16 11:36:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 564. [2022-11-16 11:36:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 398 states have (on average 1.1884422110552764) internal successors, (473), 406 states have internal predecessors, (473), 113 states have call successors, (113), 33 states have call predecessors, (113), 51 states have return successors, (247), 124 states have call predecessors, (247), 111 states have call successors, (247) [2022-11-16 11:36:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 833 transitions. [2022-11-16 11:36:48,948 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 833 transitions. Word has length 274 [2022-11-16 11:36:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:48,949 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 833 transitions. [2022-11-16 11:36:48,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 4.3) internal successors, (172), 38 states have internal predecessors, (172), 16 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 15 states have call predecessors, (30), 16 states have call successors, (30) [2022-11-16 11:36:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 833 transitions. [2022-11-16 11:36:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-16 11:36:48,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:48,954 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:36:48,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 11:36:49,167 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -724769320, now seen corresponding path program 1 times [2022-11-16 11:36:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366502791] [2022-11-16 11:36:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:49,264 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:36:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878168627] [2022-11-16 11:36:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:49,266 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:49,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:36:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:50,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 11:36:50,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:50,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:36:50,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:36:51,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:36:51,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:36:51,212 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_4202 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4202)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((v_ArrVal_4205 Int) (v_ArrVal_4203 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_4203) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4205)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset)))) is different from true [2022-11-16 11:36:51,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:51,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 11:36:51,275 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:36:51,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:36:51,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:51,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:36:51,524 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4209 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4209) |c_#memory_int|)) is different from true [2022-11-16 11:36:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 257 proven. 29 refuted. 3 times theorem prover too weak. 176 trivial. 2 not checked. [2022-11-16 11:36:52,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:52,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:52,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366502791] [2022-11-16 11:36:52,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:36:52,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878168627] [2022-11-16 11:36:52,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878168627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:52,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:36:52,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 11:36:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272562829] [2022-11-16 11:36:52,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:36:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:36:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=656, Unknown=14, NotChecked=106, Total=870 [2022-11-16 11:36:52,611 INFO L87 Difference]: Start difference. First operand 564 states and 833 transitions. Second operand has 29 states, 27 states have (on average 5.037037037037037) internal successors, (136), 25 states have internal predecessors, (136), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 11:36:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:57,569 INFO L93 Difference]: Finished difference Result 1382 states and 2209 transitions. [2022-11-16 11:36:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:36:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.037037037037037) internal successors, (136), 25 states have internal predecessors, (136), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) Word has length 284 [2022-11-16 11:36:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:57,578 INFO L225 Difference]: With dead ends: 1382 [2022-11-16 11:36:57,578 INFO L226 Difference]: Without dead ends: 904 [2022-11-16 11:36:57,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 409 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=1032, Unknown=29, NotChecked=134, Total=1332 [2022-11-16 11:36:57,582 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 354 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 10557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 4259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5884 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:57,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 4912 Invalid, 10557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [414 Valid, 4259 Invalid, 0 Unknown, 5884 Unchecked, 4.4s Time] [2022-11-16 11:36:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-16 11:36:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 587. [2022-11-16 11:36:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 417 states have (on average 1.1894484412470023) internal successors, (496), 426 states have internal predecessors, (496), 115 states have call successors, (115), 33 states have call predecessors, (115), 53 states have return successors, (271), 127 states have call predecessors, (271), 113 states have call successors, (271) [2022-11-16 11:36:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 882 transitions. [2022-11-16 11:36:57,662 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 882 transitions. Word has length 284 [2022-11-16 11:36:57,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:57,662 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 882 transitions. [2022-11-16 11:36:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.037037037037037) internal successors, (136), 25 states have internal predecessors, (136), 15 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 11:36:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 882 transitions. [2022-11-16 11:36:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-16 11:36:57,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:57,667 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:57,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-16 11:36:57,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:36:57,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:57,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1230313095, now seen corresponding path program 1 times [2022-11-16 11:36:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:57,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021651907] [2022-11-16 11:36:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:57,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:57,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:36:57,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211714784] [2022-11-16 11:36:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:57,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:57,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:57,971 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:58,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 11:36:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:59,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3447 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-16 11:36:59,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:59,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:36:59,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:37:00,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:37:00,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:37:00,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:37:00,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:37:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:02,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 45 [2022-11-16 11:37:02,946 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:37:02,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:37:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:03,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 11:37:03,402 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4467 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4467))) is different from true [2022-11-16 11:37:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 252 proven. 27 refuted. 3 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 11:37:03,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021651907] [2022-11-16 11:37:04,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:37:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211714784] [2022-11-16 11:37:04,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211714784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:04,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:04,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-16 11:37:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880796867] [2022-11-16 11:37:04,651 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:04,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 11:37:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 11:37:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1324, Unknown=16, NotChecked=74, Total=1560 [2022-11-16 11:37:04,653 INFO L87 Difference]: Start difference. First operand 587 states and 882 transitions. Second operand has 36 states, 31 states have (on average 4.419354838709677) internal successors, (137), 27 states have internal predecessors, (137), 14 states have call successors, (30), 8 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 11:37:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:09,464 INFO L93 Difference]: Finished difference Result 1426 states and 2286 transitions. [2022-11-16 11:37:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:37:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 4.419354838709677) internal successors, (137), 27 states have internal predecessors, (137), 14 states have call successors, (30), 8 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) Word has length 285 [2022-11-16 11:37:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:09,474 INFO L225 Difference]: With dead ends: 1426 [2022-11-16 11:37:09,475 INFO L226 Difference]: Without dead ends: 931 [2022-11-16 11:37:09,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 392 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=201, Invalid=1838, Unknown=35, NotChecked=88, Total=2162 [2022-11-16 11:37:09,480 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 497 mSDsluCounter, 3478 mSDsCounter, 0 mSdLazyCounter, 3478 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 10113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 3478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6027 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:09,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 3893 Invalid, 10113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 3478 Invalid, 0 Unknown, 6027 Unchecked, 4.1s Time] [2022-11-16 11:37:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-16 11:37:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 608. [2022-11-16 11:37:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 430 states have (on average 1.186046511627907) internal successors, (510), 439 states have internal predecessors, (510), 119 states have call successors, (119), 37 states have call predecessors, (119), 57 states have return successors, (275), 131 states have call predecessors, (275), 117 states have call successors, (275) [2022-11-16 11:37:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 904 transitions. [2022-11-16 11:37:09,566 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 904 transitions. Word has length 285 [2022-11-16 11:37:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:09,567 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 904 transitions. [2022-11-16 11:37:09,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 4.419354838709677) internal successors, (137), 27 states have internal predecessors, (137), 14 states have call successors, (30), 8 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 11:37:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 904 transitions. [2022-11-16 11:37:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-16 11:37:09,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:09,572 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:37:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:37:09,787 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1792762257, now seen corresponding path program 1 times [2022-11-16 11:37:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:09,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406598395] [2022-11-16 11:37:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:09,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:37:09,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060792534] [2022-11-16 11:37:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:09,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:09,874 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 11:37:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:11,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-16 11:37:11,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:11,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:11,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:37:11,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:37:11,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:37:11,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:37:11,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:37:11,860 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4721 Int) (v_ArrVal_4720 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_4720) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_4721))))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_4718 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4718))))) is different from true [2022-11-16 11:37:11,897 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:37:11,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:37:11,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:11,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:11,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 11:37:11,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:11,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:37:12,160 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4725 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4725) |c_#memory_int|)) is different from true [2022-11-16 11:37:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 257 proven. 32 refuted. 3 times theorem prover too weak. 176 trivial. 2 not checked. [2022-11-16 11:37:12,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406598395] [2022-11-16 11:37:13,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:37:13,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060792534] [2022-11-16 11:37:13,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060792534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:13,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:13,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-16 11:37:13,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502889087] [2022-11-16 11:37:13,180 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:13,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:37:13,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:37:13,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=607, Unknown=12, NotChecked=102, Total=812 [2022-11-16 11:37:13,181 INFO L87 Difference]: Start difference. First operand 608 states and 904 transitions. Second operand has 28 states, 26 states have (on average 5.269230769230769) internal successors, (137), 23 states have internal predecessors, (137), 14 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 11:37:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:16,273 INFO L93 Difference]: Finished difference Result 1422 states and 2272 transitions. [2022-11-16 11:37:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:37:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.269230769230769) internal successors, (137), 23 states have internal predecessors, (137), 14 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) Word has length 289 [2022-11-16 11:37:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:16,283 INFO L225 Difference]: With dead ends: 1422 [2022-11-16 11:37:16,283 INFO L226 Difference]: Without dead ends: 927 [2022-11-16 11:37:16,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 416 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=969, Unknown=27, NotChecked=130, Total=1260 [2022-11-16 11:37:16,288 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 292 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 7297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4759 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:16,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 3428 Invalid, 7297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2325 Invalid, 0 Unknown, 4759 Unchecked, 2.5s Time] [2022-11-16 11:37:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-11-16 11:37:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 599. [2022-11-16 11:37:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 424 states have (on average 1.1863207547169812) internal successors, (503), 433 states have internal predecessors, (503), 118 states have call successors, (118), 36 states have call predecessors, (118), 55 states have return successors, (271), 129 states have call predecessors, (271), 116 states have call successors, (271) [2022-11-16 11:37:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 892 transitions. [2022-11-16 11:37:16,374 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 892 transitions. Word has length 289 [2022-11-16 11:37:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:16,375 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 892 transitions. [2022-11-16 11:37:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.269230769230769) internal successors, (137), 23 states have internal predecessors, (137), 14 states have call successors, (30), 7 states have call predecessors, (30), 10 states have return successors, (28), 11 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 11:37:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 892 transitions. [2022-11-16 11:37:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-16 11:37:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:16,380 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:16,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-16 11:37:16,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:16,594 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1196477803, now seen corresponding path program 2 times [2022-11-16 11:37:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239143760] [2022-11-16 11:37:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:16,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:37:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017428204] [2022-11-16 11:37:16,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:37:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:16,682 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:16,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 11:37:17,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:37:17,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:17,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 3395 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:37:17,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-16 11:37:17,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:17,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:17,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239143760] [2022-11-16 11:37:17,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:37:17,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017428204] [2022-11-16 11:37:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017428204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:17,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:17,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:37:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258547141] [2022-11-16 11:37:17,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:17,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:37:17,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:37:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:37:17,811 INFO L87 Difference]: Start difference. First operand 599 states and 892 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:37:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:18,203 INFO L93 Difference]: Finished difference Result 1091 states and 1709 transitions. [2022-11-16 11:37:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:37:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 276 [2022-11-16 11:37:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:18,208 INFO L225 Difference]: With dead ends: 1091 [2022-11-16 11:37:18,208 INFO L226 Difference]: Without dead ends: 564 [2022-11-16 11:37:18,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:37:18,217 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 10 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:18,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1555 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:37:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-16 11:37:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2022-11-16 11:37:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 390 states have (on average 1.176923076923077) internal successors, (459), 397 states have internal predecessors, (459), 117 states have call successors, (117), 36 states have call predecessors, (117), 51 states have return successors, (234), 126 states have call predecessors, (234), 115 states have call successors, (234) [2022-11-16 11:37:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 810 transitions. [2022-11-16 11:37:18,289 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 810 transitions. Word has length 276 [2022-11-16 11:37:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:18,289 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 810 transitions. [2022-11-16 11:37:18,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-16 11:37:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 810 transitions. [2022-11-16 11:37:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-16 11:37:18,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:18,294 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:18,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:18,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:18,507 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1254452651, now seen corresponding path program 1 times [2022-11-16 11:37:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:18,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697520235] [2022-11-16 11:37:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:18,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:37:18,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070965282] [2022-11-16 11:37:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:18,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:18,611 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:18,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 11:37:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:19,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 3403 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 11:37:19,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 276 proven. 14 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-16 11:37:19,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-16 11:37:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:21,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697520235] [2022-11-16 11:37:21,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:37:21,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070965282] [2022-11-16 11:37:21,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070965282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:21,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:37:21,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 28 [2022-11-16 11:37:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120857799] [2022-11-16 11:37:21,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:21,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:37:21,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:37:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:37:21,338 INFO L87 Difference]: Start difference. First operand 560 states and 810 transitions. Second operand has 28 states, 25 states have (on average 7.0) internal successors, (175), 19 states have internal predecessors, (175), 7 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (35), 12 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-16 11:37:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:22,482 INFO L93 Difference]: Finished difference Result 1055 states and 1541 transitions. [2022-11-16 11:37:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:37:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.0) internal successors, (175), 19 states have internal predecessors, (175), 7 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (35), 12 states have call predecessors, (35), 6 states have call successors, (35) Word has length 286 [2022-11-16 11:37:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:22,489 INFO L225 Difference]: With dead ends: 1055 [2022-11-16 11:37:22,489 INFO L226 Difference]: Without dead ends: 632 [2022-11-16 11:37:22,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 541 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:37:22,492 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 43 mSDsluCounter, 9147 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 9574 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:22,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 9574 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:37:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-16 11:37:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 600. [2022-11-16 11:37:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 426 states have (on average 1.176056338028169) internal successors, (501), 431 states have internal predecessors, (501), 119 states have call successors, (119), 36 states have call predecessors, (119), 53 states have return successors, (248), 132 states have call predecessors, (248), 117 states have call successors, (248) [2022-11-16 11:37:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 868 transitions. [2022-11-16 11:37:22,563 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 868 transitions. Word has length 286 [2022-11-16 11:37:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:22,564 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 868 transitions. [2022-11-16 11:37:22,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.0) internal successors, (175), 19 states have internal predecessors, (175), 7 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (35), 12 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-16 11:37:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 868 transitions. [2022-11-16 11:37:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-16 11:37:22,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:22,569 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:37:22,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:22,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:37:22,782 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1635368726, now seen corresponding path program 1 times [2022-11-16 11:37:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:22,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115717221] [2022-11-16 11:37:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:22,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:37:22,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751050081] [2022-11-16 11:37:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:22,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:22,906 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:37:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:24,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 198 conjunts are in the unsatisfiable core [2022-11-16 11:37:24,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:24,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:37:24,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 11:37:24,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:37:24,605 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:37:24,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:37:25,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:37:25,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:37:27,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:27,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:37:27,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:37:27,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:37:29,594 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5389 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5389) |c_#memory_$Pointer$.offset|)) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_5378 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5378)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((v_ArrVal_5390 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5390) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 11:37:30,444 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5393 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5393) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5392 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5392) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:37:31,385 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-16 11:37:31,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 867 treesize of output 863 [2022-11-16 11:37:31,446 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:37:31,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:37:31,487 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:37:31,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 11:37:42,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:37:42,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 11:37:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 253 proven. 45 refuted. 3 times theorem prover too weak. 163 trivial. 3 not checked. [2022-11-16 11:37:42,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:45,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115717221] [2022-11-16 11:37:45,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:37:45,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751050081] [2022-11-16 11:37:45,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751050081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:45,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:45,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-16 11:37:45,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244139527] [2022-11-16 11:37:45,809 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:45,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 11:37:45,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 11:37:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2062, Unknown=44, NotChecked=186, Total=2450 [2022-11-16 11:37:45,811 INFO L87 Difference]: Start difference. First operand 600 states and 868 transitions. Second operand has 44 states, 37 states have (on average 3.675675675675676) internal successors, (136), 38 states have internal predecessors, (136), 16 states have call successors, (29), 8 states have call predecessors, (29), 14 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-16 11:37:47,709 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5389 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5389) |c_#memory_$Pointer$.offset|)) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_5378 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_5378)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((v_ArrVal_5393 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5393) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5390 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5390) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5392 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5392) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:38:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:02,846 INFO L93 Difference]: Finished difference Result 1269 states and 1932 transitions. [2022-11-16 11:38:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 11:38:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 3.675675675675676) internal successors, (136), 38 states have internal predecessors, (136), 16 states have call successors, (29), 8 states have call predecessors, (29), 14 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) Word has length 284 [2022-11-16 11:38:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:02,852 INFO L225 Difference]: With dead ends: 1269 [2022-11-16 11:38:02,852 INFO L226 Difference]: Without dead ends: 755 [2022-11-16 11:38:02,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 388 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=322, Invalid=4594, Unknown=66, NotChecked=420, Total=5402 [2022-11-16 11:38:02,857 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 281 mSDsluCounter, 6001 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 6371 SdHoareTripleChecker+Invalid, 12459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6548 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:02,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 6371 Invalid, 12459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [349 Valid, 5562 Invalid, 0 Unknown, 6548 Unchecked, 5.2s Time] [2022-11-16 11:38:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-16 11:38:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 570. [2022-11-16 11:38:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 402 states have (on average 1.1766169154228856) internal successors, (473), 407 states have internal predecessors, (473), 115 states have call successors, (115), 33 states have call predecessors, (115), 51 states have return successors, (233), 129 states have call predecessors, (233), 113 states have call successors, (233) [2022-11-16 11:38:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 821 transitions. [2022-11-16 11:38:02,932 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 821 transitions. Word has length 284 [2022-11-16 11:38:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 821 transitions. [2022-11-16 11:38:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 3.675675675675676) internal successors, (136), 38 states have internal predecessors, (136), 16 states have call successors, (29), 8 states have call predecessors, (29), 14 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-16 11:38:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 821 transitions. [2022-11-16 11:38:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-16 11:38:02,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:02,938 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:38:02,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 11:38:03,153 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1652656276, now seen corresponding path program 1 times [2022-11-16 11:38:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:03,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456408984] [2022-11-16 11:38:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:03,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:38:03,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694395085] [2022-11-16 11:38:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:03,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:03,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:03,245 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:03,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 11:38:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:04,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 173 conjunts are in the unsatisfiable core [2022-11-16 11:38:04,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:04,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:38:04,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:38:04,724 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:38:04,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:38:05,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:38:05,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 11:38:07,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:07,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 11:38:09,537 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5698 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5698) |c_#memory_int|)) is different from true [2022-11-16 11:38:09,912 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5699 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| v_ArrVal_5699)))) is different from true [2022-11-16 11:38:10,133 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5699 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|) 0 v_ArrVal_5699)) |c_#memory_int|))) is different from true [2022-11-16 11:38:11,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:11,200 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-16 11:38:11,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 1 [2022-11-16 11:38:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 262 proven. 17 refuted. 0 times theorem prover too weak. 178 trivial. 10 not checked. [2022-11-16 11:38:11,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:13,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456408984] [2022-11-16 11:38:13,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:38:13,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694395085] [2022-11-16 11:38:13,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694395085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:13,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:38:13,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-16 11:38:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748038098] [2022-11-16 11:38:13,166 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:13,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:38:13,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:38:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1416, Unknown=37, NotChecked=234, Total=1806 [2022-11-16 11:38:13,168 INFO L87 Difference]: Start difference. First operand 570 states and 821 transitions. Second operand has 35 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2022-11-16 11:38:13,869 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5699 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| v_ArrVal_5699)))) (exists ((v_ArrVal_5698 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5698) |c_#memory_int|))) is different from true [2022-11-16 11:38:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:16,154 INFO L93 Difference]: Finished difference Result 1131 states and 1642 transitions. [2022-11-16 11:38:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 11:38:16,155 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) Word has length 284 [2022-11-16 11:38:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:16,160 INFO L225 Difference]: With dead ends: 1131 [2022-11-16 11:38:16,160 INFO L226 Difference]: Without dead ends: 652 [2022-11-16 11:38:16,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 395 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=212, Invalid=2610, Unknown=56, NotChecked=428, Total=3306 [2022-11-16 11:38:16,164 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 85 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3693 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:16,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 3866 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1829 Invalid, 0 Unknown, 3693 Unchecked, 1.8s Time] [2022-11-16 11:38:16,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-16 11:38:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 604. [2022-11-16 11:38:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 432 states have (on average 1.1828703703703705) internal successors, (511), 437 states have internal predecessors, (511), 117 states have call successors, (117), 35 states have call predecessors, (117), 53 states have return successors, (239), 131 states have call predecessors, (239), 115 states have call successors, (239) [2022-11-16 11:38:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 867 transitions. [2022-11-16 11:38:16,236 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 867 transitions. Word has length 284 [2022-11-16 11:38:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:16,237 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 867 transitions. [2022-11-16 11:38:16,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.1875) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2022-11-16 11:38:16,237 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 867 transitions. [2022-11-16 11:38:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-16 11:38:16,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:16,242 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:16,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:38:16,457 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1593415517, now seen corresponding path program 1 times [2022-11-16 11:38:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:16,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353003867] [2022-11-16 11:38:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:16,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:38:16,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241736920] [2022-11-16 11:38:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:16,570 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:16,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 11:38:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:17,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 162 conjunts are in the unsatisfiable core [2022-11-16 11:38:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:17,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:38:18,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:38:18,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:38:18,277 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5985 Int) (v_ArrVal_5983 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_5983) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_5985)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) is different from true [2022-11-16 11:38:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:18,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:18,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 11:38:18,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:18,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:38:20,527 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5988 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5988)) |c_#memory_int|)) is different from true [2022-11-16 11:38:23,073 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5990 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5990) |c_#memory_int|)) is different from true [2022-11-16 11:38:23,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:38:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 253 proven. 32 refuted. 0 times theorem prover too weak. 172 trivial. 5 not checked. [2022-11-16 11:38:23,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:24,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353003867] [2022-11-16 11:38:24,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:38:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241736920] [2022-11-16 11:38:24,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241736920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:24,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:38:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 11:38:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861721584] [2022-11-16 11:38:24,013 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:24,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:38:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:24,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:38:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=608, Unknown=21, NotChecked=156, Total=870 [2022-11-16 11:38:24,015 INFO L87 Difference]: Start difference. First operand 604 states and 867 transitions. Second operand has 29 states, 26 states have (on average 5.269230769230769) internal successors, (137), 27 states have internal predecessors, (137), 16 states have call successors, (30), 4 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 11:38:30,857 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5990 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5990) |c_#memory_int|)) (exists ((v_ArrVal_5988 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5988)) |c_#memory_int|))) is different from true [2022-11-16 11:38:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:33,593 INFO L93 Difference]: Finished difference Result 1300 states and 1952 transitions. [2022-11-16 11:38:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:38:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.269230769230769) internal successors, (137), 27 states have internal predecessors, (137), 16 states have call successors, (30), 4 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) Word has length 286 [2022-11-16 11:38:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:33,600 INFO L225 Difference]: With dead ends: 1300 [2022-11-16 11:38:33,600 INFO L226 Difference]: Without dead ends: 782 [2022-11-16 11:38:33,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=119, Invalid=863, Unknown=26, NotChecked=252, Total=1260 [2022-11-16 11:38:33,604 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 217 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3879 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 3384 Invalid, 7167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3135 Invalid, 0 Unknown, 3879 Unchecked, 3.1s Time] [2022-11-16 11:38:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-16 11:38:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 643. [2022-11-16 11:38:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 462 states have (on average 1.1818181818181819) internal successors, (546), 469 states have internal predecessors, (546), 120 states have call successors, (120), 37 states have call predecessors, (120), 59 states have return successors, (283), 136 states have call predecessors, (283), 118 states have call successors, (283) [2022-11-16 11:38:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 949 transitions. [2022-11-16 11:38:33,688 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 949 transitions. Word has length 286 [2022-11-16 11:38:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:33,689 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 949 transitions. [2022-11-16 11:38:33,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.269230769230769) internal successors, (137), 27 states have internal predecessors, (137), 16 states have call successors, (30), 4 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 11:38:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 949 transitions. [2022-11-16 11:38:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-16 11:38:33,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:33,694 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:33,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:33,915 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:38:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 657071414, now seen corresponding path program 1 times [2022-11-16 11:38:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344053933] [2022-11-16 11:38:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:33,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:38:33,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91275672] [2022-11-16 11:38:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:33,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:33,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:33,995 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:33,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 11:38:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:35,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 3474 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-16 11:38:35,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:35,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 11:38:35,951 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6244 Int) (v_ArrVal_6243 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6243))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6244)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 11:38:35,973 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6244 Int) (v_ArrVal_6243 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6243))) (= |c_#memory_$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|) 0 v_ArrVal_6244))))) is different from true [2022-11-16 11:38:36,063 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 11:38:36,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-11-16 11:38:36,098 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 11:38:36,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 11:38:37,356 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6250 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6249 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6249))) (= |c_#memory_$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| v_ArrVal_6250))))) is different from true [2022-11-16 11:38:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 290 proven. 60 refuted. 15 times theorem prover too weak. 78 trivial. 19 not checked. [2022-11-16 11:38:48,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:51,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344053933] [2022-11-16 11:38:51,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:38:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91275672] [2022-11-16 11:38:51,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91275672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:51,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:38:51,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2022-11-16 11:38:51,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545081555] [2022-11-16 11:38:51,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:51,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-16 11:38:51,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-16 11:38:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1408, Unknown=60, NotChecked=234, Total=1806 [2022-11-16 11:38:51,865 INFO L87 Difference]: Start difference. First operand 643 states and 949 transitions. Second operand has 39 states, 33 states have (on average 5.363636363636363) internal successors, (177), 36 states have internal predecessors, (177), 16 states have call successors, (34), 5 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-16 11:38:53,531 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6244 Int) (v_ArrVal_6243 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6243))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6244)) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_6250 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6249 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6249))) (= |c_#memory_$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| v_ArrVal_6250)))))) is different from true [2022-11-16 11:39:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:15,254 INFO L93 Difference]: Finished difference Result 1738 states and 2610 transitions. [2022-11-16 11:39:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:39:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 5.363636363636363) internal successors, (177), 36 states have internal predecessors, (177), 16 states have call successors, (34), 5 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) Word has length 292 [2022-11-16 11:39:15,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:15,262 INFO L225 Difference]: With dead ends: 1738 [2022-11-16 11:39:15,262 INFO L226 Difference]: Without dead ends: 1173 [2022-11-16 11:39:15,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 334 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=303, Invalid=4575, Unknown=108, NotChecked=564, Total=5550 [2022-11-16 11:39:15,268 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 274 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 5586 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 8594 SdHoareTripleChecker+Invalid, 10763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 5586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5022 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 8594 Invalid, 10763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 5586 Invalid, 0 Unknown, 5022 Unchecked, 6.2s Time] [2022-11-16 11:39:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-16 11:39:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 943. [2022-11-16 11:39:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 713 states have (on average 1.1809256661991585) internal successors, (842), 719 states have internal predecessors, (842), 147 states have call successors, (147), 49 states have call predecessors, (147), 81 states have return successors, (391), 174 states have call predecessors, (391), 145 states have call successors, (391) [2022-11-16 11:39:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1380 transitions. [2022-11-16 11:39:15,443 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1380 transitions. Word has length 292 [2022-11-16 11:39:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:15,444 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1380 transitions. [2022-11-16 11:39:15,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 5.363636363636363) internal successors, (177), 36 states have internal predecessors, (177), 16 states have call successors, (34), 5 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-16 11:39:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1380 transitions. [2022-11-16 11:39:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-16 11:39:15,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:15,451 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:15,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:15,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:15,665 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:15,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1985896996, now seen corresponding path program 2 times [2022-11-16 11:39:15,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:15,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489359902] [2022-11-16 11:39:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:15,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:39:15,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817154130] [2022-11-16 11:39:15,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:39:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:15,746 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:15,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 11:39:19,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:39:19,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:19,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3469 conjuncts, 159 conjunts are in the unsatisfiable core [2022-11-16 11:39:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:19,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 11:39:19,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:39:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:21,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:39:25,660 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6520 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6520)))) is different from true [2022-11-16 11:39:25,886 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6522 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6522)))) is different from true [2022-11-16 11:39:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:28,664 INFO L321 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2022-11-16 11:39:28,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 41 [2022-11-16 11:39:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 3 not checked. [2022-11-16 11:39:28,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:29,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489359902] [2022-11-16 11:39:29,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:39:29,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817154130] [2022-11-16 11:39:29,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817154130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:29,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:39:29,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-16 11:39:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111040521] [2022-11-16 11:39:29,724 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:39:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:39:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=396, Unknown=12, NotChecked=82, Total=552 [2022-11-16 11:39:29,727 INFO L87 Difference]: Start difference. First operand 943 states and 1380 transitions. Second operand has 23 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 11 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-16 11:39:32,294 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|))) (and (exists ((v_ArrVal_6522 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6522)))) (exists ((v_ArrVal_6520 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store .cse0 |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6520)))))) is different from true [2022-11-16 11:39:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:34,580 INFO L93 Difference]: Finished difference Result 1863 states and 2791 transitions. [2022-11-16 11:39:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:39:34,580 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 11 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 290 [2022-11-16 11:39:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:34,588 INFO L225 Difference]: With dead ends: 1863 [2022-11-16 11:39:34,589 INFO L226 Difference]: Without dead ends: 1109 [2022-11-16 11:39:34,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 427 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=79, Invalid=519, Unknown=14, NotChecked=144, Total=756 [2022-11-16 11:39:34,594 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 186 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 5730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3237 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:34,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 3165 Invalid, 5730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2325 Invalid, 0 Unknown, 3237 Unchecked, 2.5s Time] [2022-11-16 11:39:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-11-16 11:39:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 948. [2022-11-16 11:39:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 716 states have (on average 1.1801675977653632) internal successors, (845), 723 states have internal predecessors, (845), 148 states have call successors, (148), 49 states have call predecessors, (148), 82 states have return successors, (394), 175 states have call predecessors, (394), 146 states have call successors, (394) [2022-11-16 11:39:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1387 transitions. [2022-11-16 11:39:34,716 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1387 transitions. Word has length 290 [2022-11-16 11:39:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:34,716 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1387 transitions. [2022-11-16 11:39:34,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 11 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-16 11:39:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1387 transitions. [2022-11-16 11:39:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-16 11:39:34,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:34,723 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:39:34,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:34,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:34,943 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash -979779704, now seen corresponding path program 1 times [2022-11-16 11:39:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:34,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366810312] [2022-11-16 11:39:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:35,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:39:35,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110395869] [2022-11-16 11:39:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:35,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:35,038 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:35,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 11:39:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:36,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 216 conjunts are in the unsatisfiable core [2022-11-16 11:39:36,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:36,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:39:37,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:39:37,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:39:37,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:39:37,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:39:37,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:39:37,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:39:37,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:39:37,650 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6790 Int) (v_ArrVal_6800 Int) (v_ArrVal_6799 Int) (v_ArrVal_6798 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_6795 Int) (v_ArrVal_6794 Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_6794) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_6800)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_6795) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_6798)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_6790) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_6799)))))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_6789 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6789)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0)))) is different from true [2022-11-16 11:39:37,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 11:39:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-16 11:39:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-16 11:39:37,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:39:37,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:39:37,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:39:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:39:37,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:37,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:39:38,250 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6809 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6809) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6810 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6810) |c_#memory_int|)) (exists ((v_ArrVal_6808 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6808)))) is different from true [2022-11-16 11:39:39,261 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6811 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| v_ArrVal_6811)) |c_#memory_int|)) is different from true [2022-11-16 11:39:39,272 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6811 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|) 0 v_ArrVal_6811)) |c_#memory_int|)) is different from true [2022-11-16 11:39:39,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:39,913 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 11:39:39,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 100 [2022-11-16 11:39:39,937 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:39:39,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:39:39,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:39,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-11-16 11:39:39,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:39,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-11-16 11:39:39,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:39:39,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:39:40,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:40,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 11:39:40,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 50 [2022-11-16 11:39:40,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 11:39:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 253 proven. 31 refuted. 0 times theorem prover too weak. 147 trivial. 12 not checked. [2022-11-16 11:39:41,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:44,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:44,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366810312] [2022-11-16 11:39:44,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:39:44,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110395869] [2022-11-16 11:39:44,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110395869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:44,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:39:44,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2022-11-16 11:39:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488847314] [2022-11-16 11:39:44,893 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-16 11:39:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-16 11:39:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2318, Unknown=53, NotChecked=404, Total=2970 [2022-11-16 11:39:44,894 INFO L87 Difference]: Start difference. First operand 948 states and 1387 transitions. Second operand has 47 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 40 states have internal predecessors, (140), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-16 11:39:45,899 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6809 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6809) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6810 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6810) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6811 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6811)) |c_#memory_int|)) (exists ((v_ArrVal_6808 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6808)))) is different from true [2022-11-16 11:39:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:39:50,369 INFO L93 Difference]: Finished difference Result 1917 states and 2865 transitions. [2022-11-16 11:39:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:39:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 40 states have internal predecessors, (140), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) Word has length 278 [2022-11-16 11:39:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:39:50,378 INFO L225 Difference]: With dead ends: 1917 [2022-11-16 11:39:50,378 INFO L226 Difference]: Without dead ends: 1175 [2022-11-16 11:39:50,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 373 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=279, Invalid=3460, Unknown=63, NotChecked=620, Total=4422 [2022-11-16 11:39:50,386 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 453 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 9217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6056 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:39:50,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 4083 Invalid, 9217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2601 Invalid, 0 Unknown, 6056 Unchecked, 2.8s Time] [2022-11-16 11:39:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-16 11:39:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 999. [2022-11-16 11:39:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 758 states have (on average 1.1807387862796834) internal successors, (895), 767 states have internal predecessors, (895), 152 states have call successors, (152), 51 states have call predecessors, (152), 87 states have return successors, (421), 180 states have call predecessors, (421), 150 states have call successors, (421) [2022-11-16 11:39:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1468 transitions. [2022-11-16 11:39:50,524 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1468 transitions. Word has length 278 [2022-11-16 11:39:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:39:50,525 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1468 transitions. [2022-11-16 11:39:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 3.3333333333333335) internal successors, (140), 40 states have internal predecessors, (140), 18 states have call successors, (29), 10 states have call predecessors, (29), 15 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-16 11:39:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1468 transitions. [2022-11-16 11:39:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-16 11:39:50,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:39:50,532 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:50,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:50,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 11:39:50,747 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:39:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash 296489358, now seen corresponding path program 1 times [2022-11-16 11:39:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169770620] [2022-11-16 11:39:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:50,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:39:50,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441134109] [2022-11-16 11:39:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:50,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:50,844 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:50,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 11:39:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:52,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 3498 conjuncts, 197 conjunts are in the unsatisfiable core [2022-11-16 11:39:52,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:52,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:39:52,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:39:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:52,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:39:52,617 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7099 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7099)))) is different from true [2022-11-16 11:39:52,627 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7099 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_7099)))) is different from true [2022-11-16 11:39:56,801 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7100 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7100))) is different from true [2022-11-16 11:40:03,056 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_7100 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7100)))) is different from true [2022-11-16 11:40:03,084 WARN L855 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_priority_queue_is_valid_#in~queue#1.base|) (+ 56 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) 18446744073709551616) 0)) (exists ((v_ArrVal_7099 Int) (v_ArrVal_7100 (Array Int Int)) (|aws_array_list_is_valid_~#required_size~0.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_7099)) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7100)))) is different from true [2022-11-16 11:40:03,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:03,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 11:40:03,189 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:40:03,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-16 11:40:03,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 11:40:20,398 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7103 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7104 Int) (v_ArrVal_7102 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7102))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7103) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7104)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:40:20,431 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7103 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7104 Int) (v_ArrVal_7102 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7102))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7103) |c_#memory_int|) (= |c_#memory_$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 v_ArrVal_7104))))) is different from true [2022-11-16 11:40:33,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:40:33,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:40:33,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:40:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 301 proven. 15 refuted. 2 times theorem prover too weak. 68 trivial. 76 not checked. [2022-11-16 11:40:44,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:45,296 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722| Int) (v_ArrVal_7132 (Array Int Int)) (v_ArrVal_7134 Int) (v_ArrVal_7133 Int)) (let ((.cse0 (+ c_s_sift_up_~queue.offset 80))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722|) 0 v_ArrVal_7133)) c_s_sift_up_~queue.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722| v_ArrVal_7132) c_s_sift_up_~queue.base) (+ 56 c_s_sift_up_~queue.offset)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_722|) 0 v_ArrVal_7134)) c_s_sift_up_~queue.base) .cse0) 0))))) is different from false [2022-11-16 11:40:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:45,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169770620] [2022-11-16 11:40:45,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:40:45,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441134109] [2022-11-16 11:40:45,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441134109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:45,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:45,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-16 11:40:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053368348] [2022-11-16 11:40:45,299 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:45,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:40:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:40:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1485, Unknown=37, NotChecked=680, Total=2352 [2022-11-16 11:40:45,300 INFO L87 Difference]: Start difference. First operand 999 states and 1468 transitions. Second operand has 48 states, 44 states have (on average 4.2727272727272725) internal successors, (188), 42 states have internal predecessors, (188), 23 states have call successors, (37), 8 states have call predecessors, (37), 17 states have return successors, (35), 20 states have call predecessors, (35), 22 states have call successors, (35) [2022-11-16 11:40:46,348 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7103 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7104 Int) (v_ArrVal_7102 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7102))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7103) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7104)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_7100 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7100))) (exists ((v_ArrVal_7099 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7099))))) is different from true [2022-11-16 11:40:58,867 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_7103 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7104 Int) (v_ArrVal_7102 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7102))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7103) |c_#memory_int|) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7104))))) (exists ((v_ArrVal_7100 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7100))) (exists ((v_ArrVal_7099 Int) (|aws_array_list_is_valid_~#required_size~0.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_7099))))) is different from true [2022-11-16 11:41:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:14,798 INFO L93 Difference]: Finished difference Result 1912 states and 2882 transitions. [2022-11-16 11:41:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:41:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 4.2727272727272725) internal successors, (188), 42 states have internal predecessors, (188), 23 states have call successors, (37), 8 states have call predecessors, (37), 17 states have return successors, (35), 20 states have call predecessors, (35), 22 states have call successors, (35) Word has length 299 [2022-11-16 11:41:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:14,808 INFO L225 Difference]: With dead ends: 1912 [2022-11-16 11:41:14,808 INFO L226 Difference]: Without dead ends: 1270 [2022-11-16 11:41:14,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 328 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 74.3s TimeCoverageRelationStatistics Valid=291, Invalid=3214, Unknown=75, NotChecked=1250, Total=4830 [2022-11-16 11:41:14,812 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 440 mSDsluCounter, 5593 mSDsCounter, 0 mSdLazyCounter, 5296 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 15453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9783 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:14,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 5997 Invalid, 15453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5296 Invalid, 0 Unknown, 9783 Unchecked, 5.5s Time] [2022-11-16 11:41:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-11-16 11:41:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1040. [2022-11-16 11:41:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 790 states have (on average 1.178481012658228) internal successors, (931), 799 states have internal predecessors, (931), 157 states have call successors, (157), 55 states have call predecessors, (157), 91 states have return successors, (442), 185 states have call predecessors, (442), 155 states have call successors, (442) [2022-11-16 11:41:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1530 transitions. [2022-11-16 11:41:14,945 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1530 transitions. Word has length 299 [2022-11-16 11:41:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:14,946 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1530 transitions. [2022-11-16 11:41:14,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 4.2727272727272725) internal successors, (188), 42 states have internal predecessors, (188), 23 states have call successors, (37), 8 states have call predecessors, (37), 17 states have return successors, (35), 20 states have call predecessors, (35), 22 states have call successors, (35) [2022-11-16 11:41:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1530 transitions. [2022-11-16 11:41:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-16 11:41:14,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:14,955 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:14,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:15,180 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1313155001, now seen corresponding path program 1 times [2022-11-16 11:41:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:15,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102015538] [2022-11-16 11:41:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:15,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:41:15,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139799673] [2022-11-16 11:41:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:15,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:15,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:15,262 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:15,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 11:41:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 3497 conjuncts, 303 conjunts are in the unsatisfiable core [2022-11-16 11:41:16,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:16,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:41:16,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:41:17,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:41:19,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:41:21,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:41:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2022-11-16 11:41:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:24,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:41:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:24,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:41:27,216 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7412 Int) (v_ArrVal_7411 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7412))) (= |c_#memory_$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| v_ArrVal_7411))))) is different from true [2022-11-16 11:41:30,548 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7412 Int) (v_ArrVal_7411 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7412))) (= |c_#memory_$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 v_ArrVal_7411))))) is different from true [2022-11-16 11:41:35,116 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7416 Int) (v_ArrVal_7414 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7416)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7414))))) is different from true [2022-11-16 11:41:39,656 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_723| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7427 Int) (v_ArrVal_7426 Int) (v_ArrVal_7412 Int) (v_ArrVal_7411 Int)) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_723| (store (select |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_723|) 0 v_ArrVal_7426)))) (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7412))) |c_#memory_$Pointer$.base|) (= (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_723| (store (select |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_723|) 0 v_ArrVal_7427)))) (store .cse1 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse1 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7411))) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:41:39,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:39,773 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:41:39,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-16 11:41:39,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:41:39,796 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:41:39,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2022-11-16 11:41:55,422 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7418 Int)) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7418)))) is different from true [2022-11-16 11:42:01,799 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7418 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7418)) |c_#memory_$Pointer$.base|)) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) is different from true [2022-11-16 11:42:06,387 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7421 Int) (v_ArrVal_7420 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7421)) |c_#memory_int|) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7420))))) is different from true [2022-11-16 11:42:15,091 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 11:42:15,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 33 [2022-11-16 11:42:17,613 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 11:42:17,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 95 [2022-11-16 11:42:17,652 INFO L321 Elim1Store]: treesize reduction 84, result has 1.2 percent of original size [2022-11-16 11:42:17,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 1 [2022-11-16 11:42:21,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 11:42:21,337 INFO L321 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2022-11-16 11:42:21,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2022-11-16 11:42:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 270 proven. 43 refuted. 17 times theorem prover too weak. 87 trivial. 45 not checked. [2022-11-16 11:42:21,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:21,842 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_736| Int) (v_ArrVal_7445 (Array Int Int)) (v_ArrVal_7446 Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_736| v_ArrVal_7445) c_s_sift_up_~queue.base) (+ 40 c_s_sift_up_~queue.offset)) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_736| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_736|) 0 v_ArrVal_7446)) c_s_sift_up_~queue.base) (+ c_s_sift_up_~queue.offset 16)) 18446744073709551616) 0)))) is different from false [2022-11-16 11:42:21,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102015538] [2022-11-16 11:42:21,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:42:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139799673] [2022-11-16 11:42:21,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139799673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:21,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:21,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2022-11-16 11:42:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453929681] [2022-11-16 11:42:21,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-16 11:42:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-16 11:42:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2299, Unknown=90, NotChecked=840, Total=3422 [2022-11-16 11:42:21,847 INFO L87 Difference]: Start difference. First operand 1040 states and 1530 transitions. Second operand has 58 states, 53 states have (on average 3.188679245283019) internal successors, (169), 47 states have internal predecessors, (169), 21 states have call successors, (33), 10 states have call predecessors, (33), 19 states have return successors, (33), 21 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-16 11:42:40,752 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7412 Int) (v_ArrVal_7411 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7412))) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7411))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7421 Int) (v_ArrVal_7420 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7421)) |c_#memory_int|) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7420))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7418 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7418)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7416 Int) (v_ArrVal_7414 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7416)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7414)))))) is different from true [2022-11-16 11:42:49,177 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7418 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7418)) |c_#memory_$Pointer$.base|)) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7412 Int) (v_ArrVal_7411 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7412))) (= |c_#memory_$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 v_ArrVal_7411)))))) is different from true [2022-11-16 11:43:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:06,985 INFO L93 Difference]: Finished difference Result 1924 states and 2919 transitions. [2022-11-16 11:43:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:43:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 53 states have (on average 3.188679245283019) internal successors, (169), 47 states have internal predecessors, (169), 21 states have call successors, (33), 10 states have call predecessors, (33), 19 states have return successors, (33), 21 states have call predecessors, (33), 20 states have call successors, (33) Word has length 293 [2022-11-16 11:43:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:06,993 INFO L225 Difference]: With dead ends: 1924 [2022-11-16 11:43:06,993 INFO L226 Difference]: Without dead ends: 1259 [2022-11-16 11:43:06,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 245 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 104.8s TimeCoverageRelationStatistics Valid=353, Invalid=4394, Unknown=123, NotChecked=1450, Total=6320 [2022-11-16 11:43:06,997 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 315 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 5270 SdHoareTripleChecker+Invalid, 12702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9854 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:06,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 5270 Invalid, 12702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2454 Invalid, 0 Unknown, 9854 Unchecked, 2.4s Time] [2022-11-16 11:43:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-11-16 11:43:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1100. [2022-11-16 11:43:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 838 states have (on average 1.1778042959427208) internal successors, (987), 846 states have internal predecessors, (987), 165 states have call successors, (165), 59 states have call predecessors, (165), 95 states have return successors, (488), 194 states have call predecessors, (488), 163 states have call successors, (488) [2022-11-16 11:43:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1640 transitions. [2022-11-16 11:43:07,169 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1640 transitions. Word has length 293 [2022-11-16 11:43:07,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:07,170 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1640 transitions. [2022-11-16 11:43:07,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 53 states have (on average 3.188679245283019) internal successors, (169), 47 states have internal predecessors, (169), 21 states have call successors, (33), 10 states have call predecessors, (33), 19 states have return successors, (33), 21 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-16 11:43:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1640 transitions. [2022-11-16 11:43:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-16 11:43:07,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:07,178 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:07,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:07,394 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:07,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1192529364, now seen corresponding path program 1 times [2022-11-16 11:43:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:07,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428006072] [2022-11-16 11:43:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:07,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:07,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646318335] [2022-11-16 11:43:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:07,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:07,483 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:07,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 11:43:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:08,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 3468 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 11:43:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-16 11:43:08,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:43:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:08,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428006072] [2022-11-16 11:43:08,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:08,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646318335] [2022-11-16 11:43:08,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646318335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:08,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:08,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:43:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875452239] [2022-11-16 11:43:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:08,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:43:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:43:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:43:08,877 INFO L87 Difference]: Start difference. First operand 1100 states and 1640 transitions. Second operand has 10 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-16 11:43:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:09,330 INFO L93 Difference]: Finished difference Result 1867 states and 2823 transitions. [2022-11-16 11:43:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:43:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 293 [2022-11-16 11:43:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:09,339 INFO L225 Difference]: With dead ends: 1867 [2022-11-16 11:43:09,339 INFO L226 Difference]: Without dead ends: 1164 [2022-11-16 11:43:09,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:43:09,342 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 5 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:09,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3425 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:43:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-11-16 11:43:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1102. [2022-11-16 11:43:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 839 states have (on average 1.1775923718712753) internal successors, (988), 848 states have internal predecessors, (988), 165 states have call successors, (165), 59 states have call predecessors, (165), 96 states have return successors, (503), 194 states have call predecessors, (503), 163 states have call successors, (503) [2022-11-16 11:43:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1656 transitions. [2022-11-16 11:43:09,505 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1656 transitions. Word has length 293 [2022-11-16 11:43:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:09,506 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1656 transitions. [2022-11-16 11:43:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-16 11:43:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1656 transitions. [2022-11-16 11:43:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-16 11:43:09,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:09,513 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:09,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 11:43:09,727 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1792200542, now seen corresponding path program 1 times [2022-11-16 11:43:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:09,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806528577] [2022-11-16 11:43:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:09,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:09,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427360767] [2022-11-16 11:43:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:09,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:09,813 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:09,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-16 11:43:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:11,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 3513 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-16 11:43:11,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:11,539 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7928 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7930 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7928)) |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7930))))) is different from true [2022-11-16 11:43:11,559 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7928 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7930 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7928))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7930)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:43:12,241 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7933 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7934 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7934)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7933)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 11:43:13,152 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:43:13,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 11:43:13,167 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:43:13,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 11:43:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 326 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 15 not checked. [2022-11-16 11:43:18,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:19,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806528577] [2022-11-16 11:43:19,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:43:19,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427360767] [2022-11-16 11:43:19,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427360767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:43:19,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:43:19,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-16 11:43:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103689356] [2022-11-16 11:43:19,104 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:43:19,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:43:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:43:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=523, Unknown=16, NotChecked=144, Total=756 [2022-11-16 11:43:19,106 INFO L87 Difference]: Start difference. First operand 1102 states and 1656 transitions. Second operand has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 25 states have internal predecessors, (167), 14 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 10 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 11:43:19,552 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7928 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7930 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7928)) |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7930))))) (exists ((v_ArrVal_7933 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7934 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7934)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7933)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 11:43:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:22,994 INFO L93 Difference]: Finished difference Result 1939 states and 2953 transitions. [2022-11-16 11:43:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:43:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 25 states have internal predecessors, (167), 14 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 10 states have call predecessors, (31), 13 states have call successors, (31) Word has length 298 [2022-11-16 11:43:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:23,003 INFO L225 Difference]: With dead ends: 1939 [2022-11-16 11:43:23,004 INFO L226 Difference]: Without dead ends: 1234 [2022-11-16 11:43:23,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=97, Invalid=709, Unknown=22, NotChecked=228, Total=1056 [2022-11-16 11:43:23,008 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 186 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 7606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4360 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:23,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 3938 Invalid, 7606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3103 Invalid, 0 Unknown, 4360 Unchecked, 3.0s Time] [2022-11-16 11:43:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-11-16 11:43:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1063. [2022-11-16 11:43:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 807 states have (on average 1.1821561338289963) internal successors, (954), 820 states have internal predecessors, (954), 161 states have call successors, (161), 56 states have call predecessors, (161), 93 states have return successors, (474), 186 states have call predecessors, (474), 159 states have call successors, (474) [2022-11-16 11:43:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1589 transitions. [2022-11-16 11:43:23,167 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1589 transitions. Word has length 298 [2022-11-16 11:43:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:23,168 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1589 transitions. [2022-11-16 11:43:23,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 25 states have internal predecessors, (167), 14 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (31), 10 states have call predecessors, (31), 13 states have call successors, (31) [2022-11-16 11:43:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1589 transitions. [2022-11-16 11:43:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-16 11:43:23,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:23,175 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:23,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 11:43:23,391 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash -987677676, now seen corresponding path program 1 times [2022-11-16 11:43:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838344671] [2022-11-16 11:43:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:23,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:43:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693802068] [2022-11-16 11:43:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:23,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:23,478 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:23,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-16 11:43:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:24,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3485 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-16 11:43:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:24,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:43:25,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:43:25,096 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:43:25,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:43:25,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:43:25,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-16 11:43:31,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-16 11:43:31,482 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-16 11:43:31,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-11-16 11:43:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:33,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-16 11:43:34,907 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8242 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8242) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:43:41,216 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8243 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8243)))) is different from true [2022-11-16 11:43:41,226 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8243 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8243)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 11:43:43,402 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 11:43:43,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 11:43:43,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:43:43,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:43:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:43,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-16 11:43:43,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-16 11:43:43,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 11:43:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:43,558 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 11:43:43,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 107 [2022-11-16 11:43:43,577 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:43:43,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:43:43,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:43:43,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:43:43,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:43,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2022-11-16 11:43:43,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2022-11-16 11:43:43,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 11:44:40,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2022-11-16 11:44:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 262 proven. 21 refuted. 0 times theorem prover too weak. 159 trivial. 10 not checked. [2022-11-16 11:44:41,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:43,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838344671] [2022-11-16 11:44:43,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:44:43,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693802068] [2022-11-16 11:44:43,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693802068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:44:43,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:44:43,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 11:44:43,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008194579] [2022-11-16 11:44:43,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:43,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:44:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:43,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:44:43,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=853, Unknown=45, NotChecked=186, Total=1190 [2022-11-16 11:44:43,680 INFO L87 Difference]: Start difference. First operand 1063 states and 1589 transitions. Second operand has 32 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 16 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 11:44:56,314 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_8242 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_8242))))) (exists ((v_ArrVal_8243 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8243)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 11:45:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:03,845 INFO L93 Difference]: Finished difference Result 2114 states and 3242 transitions. [2022-11-16 11:45:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:45:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 16 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) Word has length 287 [2022-11-16 11:45:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:03,854 INFO L225 Difference]: With dead ends: 2114 [2022-11-16 11:45:03,854 INFO L226 Difference]: Without dead ends: 1294 [2022-11-16 11:45:03,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 399 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 94.1s TimeCoverageRelationStatistics Valid=153, Invalid=1356, Unknown=67, NotChecked=316, Total=1892 [2022-11-16 11:45:03,859 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 326 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 9353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5654 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:03,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 4299 Invalid, 9353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 3329 Invalid, 0 Unknown, 5654 Unchecked, 3.0s Time] [2022-11-16 11:45:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-11-16 11:45:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1094. [2022-11-16 11:45:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 833 states have (on average 1.1812725090036014) internal successors, (984), 847 states have internal predecessors, (984), 163 states have call successors, (163), 56 states have call predecessors, (163), 96 states have return successors, (494), 190 states have call predecessors, (494), 161 states have call successors, (494) [2022-11-16 11:45:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1641 transitions. [2022-11-16 11:45:03,996 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1641 transitions. Word has length 287 [2022-11-16 11:45:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:03,997 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1641 transitions. [2022-11-16 11:45:03,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 16 states have call successors, (30), 8 states have call predecessors, (30), 13 states have return successors, (28), 15 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-16 11:45:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1641 transitions. [2022-11-16 11:45:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-16 11:45:04,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:04,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:04,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-11-16 11:45:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 11:45:04,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2081627715, now seen corresponding path program 1 times [2022-11-16 11:45:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388243786] [2022-11-16 11:45:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:04,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:04,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642788809] [2022-11-16 11:45:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:04,324 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:04,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-16 11:45:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:05,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3462 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 11:45:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:05,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:45:05,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:45:05,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-16 11:45:10,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-16 11:45:10,117 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-16 11:45:10,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-11-16 11:45:16,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:45:16,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:45:16,523 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_8530 Int) (v_ArrVal_8532 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_8530) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_8532))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_8528 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_8528)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0)))) is different from true [2022-11-16 11:45:16,562 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:45:16,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:45:16,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:45:16,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:45:16,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 34 [2022-11-16 11:45:16,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:45:16,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-16 11:45:16,880 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8535 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8535))) is different from true [2022-11-16 11:45:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 245 proven. 33 refuted. 3 times theorem prover too weak. 173 trivial. 2 not checked. [2022-11-16 11:45:27,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:29,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388243786] [2022-11-16 11:45:29,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:29,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642788809] [2022-11-16 11:45:29,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642788809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:29,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:29,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-16 11:45:29,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222007837] [2022-11-16 11:45:29,902 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:29,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 11:45:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 11:45:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=743, Unknown=34, NotChecked=114, Total=992 [2022-11-16 11:45:29,903 INFO L87 Difference]: Start difference. First operand 1094 states and 1641 transitions. Second operand has 31 states, 29 states have (on average 4.620689655172414) internal successors, (134), 26 states have internal predecessors, (134), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 11:45:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:38,834 INFO L93 Difference]: Finished difference Result 2226 states and 3386 transitions. [2022-11-16 11:45:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:45:38,835 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 4.620689655172414) internal successors, (134), 26 states have internal predecessors, (134), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) Word has length 284 [2022-11-16 11:45:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:38,844 INFO L225 Difference]: With dead ends: 2226 [2022-11-16 11:45:38,844 INFO L226 Difference]: Without dead ends: 1348 [2022-11-16 11:45:38,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 407 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=148, Invalid=1218, Unknown=48, NotChecked=146, Total=1560 [2022-11-16 11:45:38,849 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 317 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4811 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:38,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 3367 Invalid, 7404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 2222 Invalid, 0 Unknown, 4811 Unchecked, 2.2s Time] [2022-11-16 11:45:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-11-16 11:45:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1109. [2022-11-16 11:45:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 846 states have (on average 1.1808510638297873) internal successors, (999), 861 states have internal predecessors, (999), 163 states have call successors, (163), 56 states have call predecessors, (163), 98 states have return successors, (490), 191 states have call predecessors, (490), 161 states have call successors, (490) [2022-11-16 11:45:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1652 transitions. [2022-11-16 11:45:38,973 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1652 transitions. Word has length 284 [2022-11-16 11:45:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:38,973 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1652 transitions. [2022-11-16 11:45:38,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 4.620689655172414) internal successors, (134), 26 states have internal predecessors, (134), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (27), 12 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 11:45:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1652 transitions. [2022-11-16 11:45:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-16 11:45:38,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:38,979 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:38,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:39,180 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -504908625, now seen corresponding path program 1 times [2022-11-16 11:45:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:39,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27742092] [2022-11-16 11:45:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:39,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:39,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938294239] [2022-11-16 11:45:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:39,302 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:39,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 11:45:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 3501 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-16 11:45:40,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:40,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:45:40,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:45:41,037 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:45:41,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:45:41,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:45:41,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-16 11:45:47,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-16 11:45:53,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-16 11:45:53,534 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-16 11:45:53,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-11-16 11:45:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:45:55,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-16 11:45:57,032 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8812 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8812))) is different from true [2022-11-16 11:46:03,389 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8814 Int)) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8814)))) is different from true [2022-11-16 11:46:14,206 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 11:46:14,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 11:46:14,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:46:14,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:46:14,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 11:46:14,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2022-11-16 11:46:18,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:18,506 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:46:18,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 1 [2022-11-16 11:46:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 254 proven. 20 refuted. 0 times theorem prover too weak. 175 trivial. 3 not checked. [2022-11-16 11:46:18,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:19,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:19,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27742092] [2022-11-16 11:46:19,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:46:19,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938294239] [2022-11-16 11:46:19,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938294239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:19,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:19,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-16 11:46:19,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852415524] [2022-11-16 11:46:19,273 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:19,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:46:19,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:46:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=908, Unknown=52, NotChecked=126, Total=1190 [2022-11-16 11:46:19,274 INFO L87 Difference]: Start difference. First operand 1109 states and 1652 transitions. Second operand has 34 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 15 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2022-11-16 11:46:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:54,622 INFO L93 Difference]: Finished difference Result 2221 states and 3370 transitions. [2022-11-16 11:46:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:46:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 15 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) Word has length 292 [2022-11-16 11:46:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:54,633 INFO L225 Difference]: With dead ends: 2221 [2022-11-16 11:46:54,633 INFO L226 Difference]: Without dead ends: 1358 [2022-11-16 11:46:54,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 406 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 70.1s TimeCoverageRelationStatistics Valid=244, Invalid=2319, Unknown=97, NotChecked=202, Total=2862 [2022-11-16 11:46:54,638 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 423 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 6814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4409 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:54,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 3303 Invalid, 6814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2035 Invalid, 0 Unknown, 4409 Unchecked, 1.9s Time] [2022-11-16 11:46:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-16 11:46:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1167. [2022-11-16 11:46:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 896 states have (on average 1.1796875) internal successors, (1057), 910 states have internal predecessors, (1057), 167 states have call successors, (167), 57 states have call predecessors, (167), 102 states have return successors, (519), 199 states have call predecessors, (519), 165 states have call successors, (519) [2022-11-16 11:46:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1743 transitions. [2022-11-16 11:46:54,852 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1743 transitions. Word has length 292 [2022-11-16 11:46:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:54,853 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1743 transitions. [2022-11-16 11:46:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 4.451612903225806) internal successors, (138), 30 states have internal predecessors, (138), 15 states have call successors, (31), 8 states have call predecessors, (31), 13 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2022-11-16 11:46:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1743 transitions. [2022-11-16 11:46:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-16 11:46:54,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:54,858 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:46:54,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 11:46:55,059 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1426206687, now seen corresponding path program 1 times [2022-11-16 11:46:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:55,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620385736] [2022-11-16 11:46:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:55,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:46:55,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872895677] [2022-11-16 11:46:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:55,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:55,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:55,143 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:55,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-16 11:46:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:56,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 3439 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-16 11:46:56,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:56,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:46:56,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:46:57,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:46:57,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:46:57,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:46:57,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 11:46:57,227 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_9075 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_9075)) (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0))) (exists ((v_ArrVal_9077 Int) (v_ArrVal_9078 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_9077) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_9078))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset)))) is different from true [2022-11-16 11:46:57,261 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:46:57,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:46:57,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:57,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-16 11:46:57,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:57,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:46:57,473 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9082 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9082) |c_#memory_int|)) is different from true [2022-11-16 11:46:57,814 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9084 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| v_ArrVal_9084)))) is different from true [2022-11-16 11:46:57,824 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9084 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|) 0 v_ArrVal_9084)))) is different from true [2022-11-16 11:46:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:58,141 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 11:46:58,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 100 [2022-11-16 11:46:58,160 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:46:58,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:46:58,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:46:58,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 11:46:58,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-11-16 11:46:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:46:58,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 11:46:58,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 11:46:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 248 proven. 38 refuted. 0 times theorem prover too weak. 148 trivial. 12 not checked. [2022-11-16 11:46:58,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620385736] [2022-11-16 11:47:01,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872895677] [2022-11-16 11:47:01,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872895677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:01,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:47:01,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-16 11:47:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942130172] [2022-11-16 11:47:01,889 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:01,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:47:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:47:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1485, Unknown=29, NotChecked=324, Total=1980 [2022-11-16 11:47:01,891 INFO L87 Difference]: Start difference. First operand 1167 states and 1743 transitions. Second operand has 38 states, 34 states have (on average 4.205882352941177) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 11:47:03,014 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_9082 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9082) |c_#memory_int|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9084 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|) 0 v_ArrVal_9084))))) is different from true [2022-11-16 11:47:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:12,009 INFO L93 Difference]: Finished difference Result 2281 states and 3419 transitions. [2022-11-16 11:47:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 11:47:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 4.205882352941177) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) Word has length 283 [2022-11-16 11:47:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:12,018 INFO L225 Difference]: With dead ends: 2281 [2022-11-16 11:47:12,018 INFO L226 Difference]: Without dead ends: 1336 [2022-11-16 11:47:12,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 385 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=277, Invalid=3215, Unknown=68, NotChecked=600, Total=4160 [2022-11-16 11:47:12,023 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 218 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 4811 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 11165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 4811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6181 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:12,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 4780 Invalid, 11165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 4811 Invalid, 0 Unknown, 6181 Unchecked, 4.0s Time] [2022-11-16 11:47:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-11-16 11:47:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1167. [2022-11-16 11:47:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 896 states have (on average 1.1796875) internal successors, (1057), 910 states have internal predecessors, (1057), 167 states have call successors, (167), 57 states have call predecessors, (167), 102 states have return successors, (518), 199 states have call predecessors, (518), 165 states have call successors, (518) [2022-11-16 11:47:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1742 transitions. [2022-11-16 11:47:12,155 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1742 transitions. Word has length 283 [2022-11-16 11:47:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:12,155 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1742 transitions. [2022-11-16 11:47:12,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 4.205882352941177) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-16 11:47:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1742 transitions. [2022-11-16 11:47:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-16 11:47:12,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:12,160 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:12,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-16 11:47:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:12,373 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1946496587, now seen corresponding path program 1 times [2022-11-16 11:47:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574938682] [2022-11-16 11:47:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:12,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:12,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088645101] [2022-11-16 11:47:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:12,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:12,489 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:12,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 11:47:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:13,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 3500 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-16 11:47:13,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:16,592 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_59| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_68| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_68|) (+ |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_59| 80)) 0))) (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_59| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_68| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_68|) (+ |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_59| 80)) 0)))) is different from true [2022-11-16 11:47:17,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-16 11:47:17,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 11:47:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-16 11:47:17,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:47:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:17,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574938682] [2022-11-16 11:47:17,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:47:17,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088645101] [2022-11-16 11:47:17,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088645101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:17,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:17,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:47:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327523621] [2022-11-16 11:47:17,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:47:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:47:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=297, Unknown=1, NotChecked=34, Total=380 [2022-11-16 11:47:17,068 INFO L87 Difference]: Start difference. First operand 1167 states and 1742 transitions. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 19 states have internal predecessors, (146), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-16 11:47:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:18,963 INFO L93 Difference]: Finished difference Result 2367 states and 3507 transitions. [2022-11-16 11:47:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:47:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 19 states have internal predecessors, (146), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 303 [2022-11-16 11:47:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:18,971 INFO L225 Difference]: With dead ends: 2367 [2022-11-16 11:47:18,972 INFO L226 Difference]: Without dead ends: 1458 [2022-11-16 11:47:18,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 281 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=841, Unknown=1, NotChecked=60, Total=1056 [2022-11-16 11:47:18,974 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 143 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:18,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 4629 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1007 Invalid, 0 Unknown, 624 Unchecked, 1.1s Time] [2022-11-16 11:47:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-11-16 11:47:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1247. [2022-11-16 11:47:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 964 states have (on average 1.1804979253112033) internal successors, (1138), 985 states have internal predecessors, (1138), 174 states have call successors, (174), 58 states have call predecessors, (174), 107 states have return successors, (589), 203 states have call predecessors, (589), 172 states have call successors, (589) [2022-11-16 11:47:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1901 transitions. [2022-11-16 11:47:19,137 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1901 transitions. Word has length 303 [2022-11-16 11:47:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:19,137 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 1901 transitions. [2022-11-16 11:47:19,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 19 states have internal predecessors, (146), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-16 11:47:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1901 transitions. [2022-11-16 11:47:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-16 11:47:19,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:19,145 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:19,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:19,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:19,359 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:19,359 INFO L85 PathProgramCache]: Analyzing trace with hash 523887496, now seen corresponding path program 1 times [2022-11-16 11:47:19,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:19,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151198572] [2022-11-16 11:47:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:19,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:19,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:47:19,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375722610] [2022-11-16 11:47:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:19,457 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:19,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7387c40b-1c10-4e2a-ad09-decfea8c5780/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process